# Latest additions - **[Topological Quantum Spin Liquids in a Ladder with Majorana fermions and p-wave Superconductivity](https://space-kitty.com/papers/arxiv:2610.40297)**. Magali Korolev, Fan Yang, Erik S. Sørensen et al. · 2026 (arXiv:2610.40297). Source: > In this article, we address the possibility of topological quantum spin liquids with only short-range (spin) correlations in the whole phase diagram in a ladder system, through an exactly solvable model which represents a generalization of the two-dimensional Kitaev honeycomb spin model to a ribbon geometry. This system gives rise to $\\mathbb{Z}\_2$ gauge fields emerging in a static way in the ground state through Majorana fermions which then produce either $0$ or $π$ flux. Through a quantum field theory perspective, mathematical and Density Matrix Renormalization Group results, we present our … - **[Moiré-enabled chiral plasmons in twisted bilayer graphene nanoislands](https://space-kitty.com/papers/arxiv:2610.39737)**. Magnus Husted, Viktor Kanstrup, Eduardo J. C. Dias et al. · 2026 (arXiv:2610.39737). Source: > Twisting two stacked graphene layers superimposes a moiré superlattice that reshapes their electronic structure, yet how it shapes the collective optical response of finite, nanoscale bilayers remains largely unexplored. Using an atomistic tight-binding and self-consistent density-matrix approach, we compute the twist-dependent plasmonic response of twisted bilayer graphene nanoislands comprising thousands of atoms. The spectra are strongly tunable and split into two regimes at a critical angle where a single moiré wavelength spans the island; beyond it, an ordered ladder of resonances emerges… - **[Coexistence of Superconductivity and Chern insulators with \|C\| $\\geq 1$ in twisted rhombohedral bilayer-trilayer graphene](https://space-kitty.com/papers/arxiv:2610.40170)**. Qiu Yang, Zihao Huo, Le Liu et al. · 2026 (arXiv:2610.40170). Source: > Rhombohedral multilayer graphene (RMG) has been demonstrated as a promising platform for investigating strongly correlated phases of matter. Here, we observe a coexistence of superconductivity and Chern insulators in a twisted rhombohedral bilayer-trilayer graphene moiré superlattice. Superconductivity, evidenced by a sharp transition with a critical temperature of ~180 mK, nonlinear I-V with a BKT temperature of 135 mK, and a signature of phase-sensitive interference patterns, emerges from a symmetry-breaking Fermi surface near v = -2 and D = 0, and it survives at a large in-plane magnetic fi… - **[Chiral superconductivity on a closed Klein bottle: a chirality wall and its Majorana seam spectrum](https://space-kitty.com/papers/arxiv:2610.40251)**. Junhao, Wang · 2026 (arXiv:2610.40251). Source: > We study a spinless $π$-flux lattice superconductor whose normal-state momentum-space fundamental domain is a Klein bottle. Within this model, a glide lift and a hidden antiunitary symmetry independently force the Bogoliubov--de Gennes (BdG) Chern number to vanish. A diagonal pairing breaks the antiunitary obstruction exactly when its real part is nonzero; this is necessary, not sufficient, for a chiral phase. We derive explicit Pfaffians determining Chern parity and identify three analytic families of gap closings in a real-pairing section. For a chiral state on a closed real-space Klein bott… - **[Growth and morphology of core-shell nanowires incorporating dissimilar hexagonal semiconductors: the case of InAs-ZnTe](https://space-kitty.com/papers/arxiv:2610.39770)**. Danylo Mosiiets, Susheng Tan, Sergey Frolov et al. · 2026 (arXiv:2610.39770). Source: > Core-shell nanowires incorporating semiconductors from two groups, III-V for the core and II-VI for the shell, have been grown by molecular beam epitaxy in two dedicated chambers connected under ultra-high vacuum, and studied by electron microscopy. During the growth of the shell, the wurtzite structure of the core is replicated in the shell, without any creation of defects. This is true for a wide range of shell thickness, from about one monolayer, up to 25 nm thanks to the good lattice match between the InAs material of the core and the ZnTe material of the shell. While (1 100) m-facets and … - **[Majorana Zero Modes in Fractional Vortices](https://space-kitty.com/papers/arxiv:2610.39942)**. Lecheng Fang, Haotian Li, Haijiao Ji et al. · 2026 (arXiv:2610.39942). Source: > Majorana zero modes (MZMs) are promising for topological quantum computation, with vortices in topological superconductors serving as a leading platform. Recent experiments show that integer Abrikosov vortices in iron-based superconductors can split into fractional vortices (FVs) carrying fractional flux quanta. We show that due to topological protection, MZMs hosted by FVs are spatially unfolded over the FV cores, while fermionic bound states remain localized at individual FV cores. This yields zero-bias conductance peaks in both local tunneling and nonlocal crossed Andreev reflection, offeri… - **[Electronic liquid crystals and superconductivity from doping a moiré Mott insulator](https://space-kitty.com/papers/arxiv:2610.39978)**. Yichi Zhang, Yiyu Xia, Zhongdong Han et al. · 2026 (arXiv:2610.39978). Source: > Electronic liquid crystals, such as stripe phases and nematics, are self-organized states of matter with spontaneously broken rotational symmetry. They are expected to emerge in a doped Mott insulator as a compromise between short- and long-range Coulomb interactions, and are believed to be intimately connected to the emergence of high temperature superconductivity either as a competing order or an intertwined order. Moiré semiconductors provide a controllable platform to explore the relationship between stripe phases and superconductivity near a Mott insulator. Here we report the generic appe… - **[Gravitational lensing of gravitational waves by a Kerr black hole](https://space-kitty.com/papers/arxiv:2610.39181)**. Jian-hua He · 2026 (arXiv:2610.39181). Source: > We simulate the gravitational lensing of gravitational waves (GWs) by a Kerr black hole using a $(1+1)$-dimensional time-domain mode-sum approach. To enable efficient explicit time evolution, we implement a localized hyperboloidal foliation combined with a static field redefinition, ensuring bounded characteristic speeds across an extended, uniform tortoise-coordinate grid. Incident GW initial data are constructed by projecting a plane-wave Weyl tensor onto the Kinnersley tetrad. Through local spin-dyad rotations and Wigner $D$-matrix transformations, our framework accommodates both idealized … - **[Energy-flux noise induced by imperfections of the Gaussian beam in the Li-Baker HFGW detector](https://space-kitty.com/papers/arxiv:2610.39248)**. Lin-Lin Yang, Hao Yu, Pan-Pan Wang et al. · 2026 (arXiv:2610.39248). Source: > This paper investigates the energy-flux noise induced by imperfections of the Gaussian beam (GB) in the Li-Baker high-frequency gravitational wave (HFGW) detector. Modeling these imperfections with higher-order Laguerre-Gaussian (LG) beams, we analytically derive the resulting noise-to-signal ratio for both co- and cross-polarized $\\mathrm{LG}\_{nl}$ modes. It is found that higher-order co-polarized LG beams generate no tangential energy-flux noise at the optimal detection plane ($φ=π/2$ or $3π/2$), whereas higher-order cross-polarized LG beams introduce non-negligible noise. Specifically, for … - **[Scalar-induced gravitational waves in spatially covariant gravity with two tensorial degrees of freedom](https://space-kitty.com/papers/arxiv:2610.39252)**. Jia-Xi Feng, Yang Yu, Yan-Heng Yu et al. · 2026 (arXiv:2610.39252). Source: > We study scalar-induced gravitational waves (SIGWs) in a spatially covariant gravity model with two tensorial degrees of freedom, minimally coupled to a $k$-essence scalar field. For the parameter choice considered during radiation domination, the quadratic tensor action coincides with that of general relativity (GR). We derive the scalar transfer functions at finite $σ\\equiv C\_2\\bar N$ and in the large-$\|σ\|$ limit. We then construct the source function of SIGWs. We further examine a cubic extrinsic-curvature interaction that modifies the source function of SIGWs without affecting the backgrou… - **[Robustness-based selection of laser-locking architectures for time-delay interferometry in space-based gravitational-wave detectors](https://space-kitty.com/papers/arxiv:2610.39432)**. Hao-Kang Chen, Pan-Pan Wang, Cheng-Gang Shao · 2026 (arXiv:2610.39432). Source: > Space-based gravitational-wave detectors compare laser phases exchanged between distant spacecraft. Offset phase locking keeps beatnotes in the phasemeter band, while time-delay interferometry suppresses laser frequency noise. A disturbance of one reference can degrade the functions that depend on it, making robustness an additional criterion for choosing a phase-reference architecture. We introduce a quantitative comparison based on established cascade equations and percolation measures, with directed reference graphs and Erdős--Rényi support layers. Under uniform disturbances, the robustness… - **[The Pointing Error Due To Laser Propagation in Space Plasma for TianQin Gravitational Wave Detection](https://space-kitty.com/papers/arxiv:2610.39587)**. S. W. Zhou, W. Su, S. Y. Zhou et al. · 2026 (arXiv:2610.39587 · doi:10.1029/2025sw004784). Source: > TianQin, a space-borne gravitational wave observatory, is designed to detect gravitational-wave signals via laser interferometry. As the inhomogeneous space plasma surrounds the inter-satellite laser links, the propagation of the laser in space plasma can introduce pointing error noise. In this work, we quantitatively assess the effect of plasma on the pointing accuracy of TQ's inter-satellite laser links. We employ a magnetohydrodynamic model to simulate the plasma distribution around the TQ orbit for different orbital orientations. Using the fourth-order Runge-Kutta method to conduct the ray… - **[Robust statistical significance for Gravitational Wave inference](https://space-kitty.com/papers/arxiv:2610.39785)**. Alexandre Sébastien Göttel · 2026 (arXiv:2610.39785). Source: > The field of gravitational-wave data analysis heavily relies on Bayes factors to make statements about astrophysical effects in events detected by the LIGO-Virgo-KAGRA collaboration. This is true on an event level, for example when discussing the potential detection of precession or eccentricity, as well as on a population level. For the latter, perhaps the main limiting factor is the reliance on the output from event-level nested sampling analyses, which is known to introduce growing uncertainties and biases as the number of detections increases. In both cases, while Bayes factors are useful … - **[RAKI: High-Order Alternative Finite Differences for General Relativistic Magnetohydrodynamics](https://space-kitty.com/papers/arxiv:2610.39792)**. Rahime Matur, Beyhan Karakas, Ian Hawke et al. · 2026 (arXiv:2610.39792). Source: > Binary neutron star (BNS) and black hole--neutron star mergers are among the most important multimessenger sources. Observations of these events could provide valuable insights into several unresolved phenomena, ranging from the efficiency of magnetic field amplification during and after mergers to the formation of magnetars and jets. Understanding these phenomena requires accurate modelling of magnetic field evolution, which remains a challenge for state-of-the-art general relativistic magnetohydrodynamics (GRMHD) simulations. In this work, we present \\texttt{RAKI} (Relativistic Astrophysics … - **[The first mass peak of merging black holes from core binding energies and jet-driven explosions](https://space-kitty.com/papers/arxiv:2610.39801)**. Nikki Yat Ning Wang, Dmitry Shishkin, Noam Soker · 2026 (arXiv:2610.39801). Source: > We show that the jittering-jets explosion mechanism (JJEM) can qualitatively reproduce the shape of the black hole (BH) mass distribution observed by LIGO-Virgo-KAGRA and quantitatively reproduce the peak around $M\_{p1} \\simeq 10 M\_\\odot$. To show this, we construct a toy model that captures the JJEM physics that explodes all massive stars, even when BHs form. According to the JJEM, BHs form when the star's binding energy is large, implying a massive progenitor with initial mass $M\_i \\gtrsim 25 M\_\\odot$, and when jets are launched along a fixed axis, implying a rapidly rotating pre-collapse st… - **[Tidal disruption or plunge: the role of neutron star internal structure in black hole-neutron star mergers](https://space-kitty.com/papers/arxiv:2610.39862)**. Yatharth Chaurasiya, Ritam Mallick · 2026 (arXiv:2610.39862). Source: > The outcome of black hole--neutron star (BHNS) mergers is studied using a general-relativistic mass-shedding condition in the Kerr spacetime, which determines the tidal-disruption radius from the mass ratio, the black hole (BH) spin, the neutron star (NS) compactness, and the ratio of central to average density, $η=\\frac{ρ\_{c}}{\\barρ}$. Comparing this radius with the innermost stable circular orbit, we map the boundary between tidal disruption and plunge for two relativistic mean-field equations of state (EOSs) and for an ensemble of about $10^4$ agnostic EOSs spanning the current uncertainty … - **[Looking for gravitational waves with orbital dynamics: GUEST mission and the $μ$Hz band of Gravitational Waves](https://space-kitty.com/papers/arxiv:2610.39881)**. Diego Blas · 2026 (arXiv:2610.39881). Source: > \`Adding colour'' to the gravitational-wave sky by probing unexplored frequency bands has the potential to unveil new and unexpected phenomena in the Universe. The microhertz band, between pulsar timing arrays and LISA, is a particularly attractive target: it should host the extension of the signal recently found by pulsar timing arrays (if it is generated by a family of sources of gravitational waves), and it may harbour signals from the early Universe, primordial black holes or dark matter. In these proceedings, we review how the orbits of gravitationally bound systems act as resonant detecto… - **[Benchmarking Quantum Neural Networks Developed for MBHB Coalescence in the Context of LISA Space Mission](https://space-kitty.com/papers/arxiv:2610.39980)**. Maria-Catalina Isfan, Laurentiu-Ioan Caramete, Ana Caramete · 2026 (arXiv:2610.39980). Source: > Machine learning (ML) techniques are increasingly explored to analyse gravitational wave (GW) data expected from the Laser Interferometer Space Antenna (LISA). At the same time, advances in quantum computing have stimulated interest in quantum machine learning as a potential alternative to conventional approaches. We investigate the applicability of quantum, hybrid quantum-classical, and classical ML models to two tasks relevant for LISA observations of massive black hole binaries: GW signal detection and merger prediction. Using the Sangria dataset from the LISA Data Challenge, we benchmark s… - **[Diamonds in the sky: the shape of gravitational waves from cosmic string cusps](https://space-kitty.com/papers/arxiv:2610.39983)**. Auclair Pierre, Gharib Chams, Steer Danièle · 2026 (arXiv:2610.39983). Source: > We carry an in-depth analysis of the gravitational wave (GW) emission of cosmic string cusps, going beyond the seminal work of Damour and Vilenkin. We identify two features that, to the best of our knowledge, have not been described in the literature: first the GWs emission from a cusp, at any given frequency, is not concentrated inside a cone but instead draws a diamond-like shape in the sky. Second, the emission is not maximal in the direction of the cusp velocity, but in two slightly offset directions. We explain these effects in detail, and illustrate them with simplified examples. Then, w… - **[Phenomenological implications of cosmic (super)strings with time-varying tension](https://space-kitty.com/papers/arxiv:2610.40020)**. Anastasios Avgoustidis, Edmund J. Copeland, Adam Moss et al. · 2026 (arXiv:2610.40020). Source: > Cosmic strings and cosmic superstrings could have formed in the early universe. In a particular class of models, the tension associated with these defects is time dependent, either because the strings themselves are composed of evolving moduli fields, or because they are directly coupled to evolving scalar fields leading to an effective time dependence in the string tension. Here we take seriously the possibility of this time dependence and investigate the phenomenological consequences of such an evolution, comparing the results to the more traditional case of a fixed time independent tension.… - **[Inverse Gertsenshteǐn-Zel'dovich Effect in Time-Independent Electromagnetic Field](https://space-kitty.com/papers/arxiv:2610.40024)**. Rajendra Prasad Bhatt, Rudraksh Verma, R. Prasad et al. · 2026 (arXiv:2610.40024). Source: > The inverse Gertsenshteǐn-Zel'dovich effect describes the conversion of gravitational waves into electromagnetic waves in the presence of a background electromagnetic field. This effect has primarily been studied for constant background electromagnetic fields. In this work, we develop a general formalism for calculating the components of the electric and magnetic fields induced by the passage of a gravitational wave through a spatially varying, time-independent background electromagnetic field. The formalism accommodates all six possible polarization modes of gravitational waves. We illustrate… - **[Disentangling Spin-induced Precession vs. Eccentricity in GW190521 and GW231123](https://space-kitty.com/papers/arxiv:2610.40077)**. Patricia McMillin, Giuseppe Ficarra, Carlos O. Lousto et al. · 2026 (arXiv:2610.40077). Source: > We use the more than 2000 full numerical-relativity simulations included in the fifth release of the RIT binary-black-hole waveform catalog to perform Bayesian parameter estimation, via the rapid iterative fitting algorithm (RIFT), for the gravitational-wave events GW190521 and GW231123. We revisit GW190521, which has previously been identified as potentially possessing large eccentricity upon entering the detector band at $20~\\mathrm{Hz}$, and confirm this finding: the highest likelihood is obtained from waveforms that are simultaneously eccentric and spin-precessing, yielding $e\_{20} =0.207\_… - **[The Effective Kerr-Compton Tree Amplitude from Black Hole Perturbation Theory](https://space-kitty.com/papers/arxiv:2610.40101)**. N. Emil J. Bjerrum-Bohr, Gang Chen, Konstantinos Papadimos et al. · 2026 (arXiv:2610.40101). Source: > We develop a new method to construct the tree-level Compton amplitude for gravitational-wave scattering off a Kerr black hole in post-Minkowskian effective field theory. Building on previous computations that required physical consistency of the amplitude, the method uses wave scattering functions from black hole perturbation theory to uniquely determine additional contact terms. We illustrate the iterative procedure by deriving explicit expressions up to sixth order in spin, including previously unknown sectors at the fifth and sixth orders in spin. The amplitude features complex transcendent… - **[Gravitational waves away from a Schwarzschild black hole: full spectrum analysis](https://space-kitty.com/papers/arxiv:2610.40181)**. Marco Refuto, Giampiero Esposito · 2026 (arXiv:2610.40181). Source: > Gravitational waves as one approaches Schwarzschild null infinity are the core of our investigation, treated as the spin-weighted generalisation of a massless scalar field. In particular, we compute their full spectrum, consistent with observations coming from LIGO and VIRGO experiments. This paper continues recent work by the authors, where the Poincaré asymptotic expansion was exploited in black hole perturbation theory. The mathematical formalism we developed is now intimately connected with gravitational wave phenomenology, providing new mathematical tools to investigate their features. - **[posterior-landscape: morphological feature finding in two-dimensional probability densities](https://space-kitty.com/papers/arxiv:2610.40272)**. Michele Mancarella, Viola De Renzis, Alessandro Agapito · 2026 (arXiv:2610.40272). Source: > We present posterior-landscape, a Python framework to identify and characterize morphological features in two-dimensional probability densities. The framework combines concepts from topological data analysis, statistical density-ridge estimation, and scale-space image analysis. It extracts localized concentrations, valleys, ridges, and changes of slope; for Bayesian reconstructions, it propagates uncertainty in feature recovery, geometry, and correspondence across posteriors. The framework also connects two-dimensional structures to features in one-dimensional marginals, and quantifies their c… - **[Influence of $Δ$ resonances in hyperonic neutron stars on gravitational-wave inspiral signatures](https://space-kitty.com/papers/arxiv:2610.40441)**. Athira S., Vivek Baruah Thapa, Monika Sinha · 2026 (arXiv:2610.40441). Source: > The composition of dense matter in neutron star interiors remains uncertain, with the possible appearance of the non-strange $Δ$ resonances providing an important source of theoretical uncertainty. In this work, we investigate the gravitational wave signatures of hyperonic neutron stars containing $Δ$ baryons within a density-dependent relativistic mean-field framework based on the DDME2 parametrization. Within this framework, the baryons interact among themselves via mesons. For $Δ$ baryons, the interaction is uncertain to date. We investigate how variations of the scalar and vector $Δ-$meson… - **[Gravity between two masses beyond Newton's law](https://space-kitty.com/papers/arxiv:2610.40462)**. Zhengwen Liu, Xing-Bo Yuan · 2026 (arXiv:2610.40462). Source: > Newton's law of universal gravitation describes the attraction between two masses through an inverse-distance potential. In Einstein's theory gravity gravitates: each mass reshapes the spacetime geometry through which the other acts. More than a century later, extracting the two-body interaction from this coupled geometry remains a fundamental analytical challenge. Even without motion or radiation, the static sector of the interaction harbours an infinite hierarchy of field couplings: the purest laboratory for gravitational non-linearity. Here we determine the static interaction from ninth to … - **[Anisotropic overlap reduction functions for arbitrary equal-arm TDI channels: A fully analytic framework and efficient evaluation](https://space-kitty.com/papers/arxiv:2610.40548)**. Kun Zhou, Jin Li · 2026 (arXiv:2610.40548). Source: > We establish a unified analytic framework for anisotropic overlap reduction functions (ORFs) of arbitrary finite-delay time-delay interferometry (TDI) channels in a static, reciprocal, equal-arm equilateral constellation. The construction combines the polynomial constraints for laser-noise cancellation, constellation symmetries, and directional-projection integration. A free basis of the admissible channel module separates channel generation from angular integration; two families of elementary angular kernels then generate all channel-pair intensity ORFs. The channel algebra is independent of … - **[Gravitational-Wave Echoes and Greybody Cutoff from Logarithmic Throats at a Marginal-Trapping Threshold](https://space-kitty.com/papers/arxiv:2610.40631)**. Jahed Abedi · 2026 (arXiv:2610.40631). Source: > When a static, spherically symmetric configuration is brought close to a marginal-trapping threshold, it develops a long throat. As the nondegenerate minimum of $F=1-2m/r$ approaches zero, $F\\simeqΔ+β(r-R\_M)^2$, the proper length across the throat grows as $-\\lnΔ/\\sqrtβ$, even though the local curvature stays finite. We study how axial gravitational waves propagate in an effective model of this throat, in which the lapse is parametrized as $N\\propto F^{s/2}$. For $s\>0$ the throat acts as a cavity behind the angular-momentum barrier, and waves come back out as echoes spaced by $T\_{\\rm echo}\\sim… - **[Photon Rings and Mass-Independent Observables of a Five-Dimensional Charged AdS Black Hole](https://space-kitty.com/papers/arxiv:2610.40069)**. Amrillokhon Mamatkhonov, Javokhir Sharipov, Tursunali Xamidov et al. · 2026 (arXiv:2610.40069). Source: > We investigate the optical properties of a five-dimensional charged anti-de Sitter (AdS) black hole. Using the null geodesic equations, we determine the event horizon and photon sphere radii and the critical impact parameter, showing that all decrease with increasing charge, while the photon sphere radius remains independent of the AdS radius. To avoid dependence on the mass scale and the observer-dependent apparent size of the shadow in an AdS spacetime, we introduce two mass-independent geometric observables: the subring exponent $γ$ and the ratio of the critical impact parameter to that of … - **[Twinor Theory: Field Equations from $(A)dS\_4^{\\mathbb C}$ Spin-Tractors: A Twin to Twistor Theory Modelled on $(A)dS\_4^{\\mathbb C}$](https://space-kitty.com/papers/arxiv:2610.40435)**. Chen-Hsu Chien · 2026 (arXiv:2610.40435). Source: > Twinor theory is formulated as a spacetime-based counterpart to twistor theory using holomorphic reductive Cartan geometry modelled on complexified $(A)dS\_4$. The fundamental spin-tractor bundle defines Dirac twinors, its symmetric powers define ladder twinors, and their extremal Lorentz components define chiral twinors. The general \\textit{twinor field equation} is $D\\mathbf Y=\\mathbf J$. Its adjacent contractions and mixed divergence are constrained by source relations; no additional equation is imposed on its completely symmetric projection. On a flat torsion-free Lorentzian background, the… - **[On Geometric Observables in Gravity](https://space-kitty.com/papers/arxiv:2610.40615)**. Manthos Karydas, Murat Kologlu, Allic Sivaramakrishnan · 2026 (arXiv:2610.40615). Source: > Measures of geometry like distance and time are staples of classical gravity. While geometric quantities arise broadly in quantum gravity, their graviton corrections are less explored. In this paper, we study geometric observables in perturbative quantum gravity. We form distance and time observables that model measurements, including in the presence of spacetime fluctuations. Gravitational dressing ensures these constructions are coordinate invariant. Then we show how these finite-distance observables become memory and Shapiro time delay operators upon taking asymptotic limits. We compute lea… - **[Neutron Optical Constraints on Exotic Parity-odd Interactions between Neutrons and Nucleons](https://space-kitty.com/papers/arxiv:2610.39333)**. V. Kurmangaliyeva, O. Agyl-Mussapar, S. Amangeldinova et al. · 2026 (arXiv:2610.39333). Source: > Many theories beyond the standard model of particle physics predict the existence of weakly-coupled exotic spin-dependent interactions between standard model particles. We use experimental upper bounds on neutron-nucleus parity violation at meV and keV neutron energies in the forward scattering limit described by neutron optics to constrain exotic parity-odd interactions of the neutron with nucleons from exotic vector boson exchange for force ranges between $10^{-2}$ to $10^{-14}$ meters. - **[Searching for axion-like particles with space-based optical lattice clock networks](https://space-kitty.com/papers/arxiv:2610.39725)**. Yu-Song Cao, Nick Houston, YanXia Liu et al. · 2026 (arXiv:2610.39725). Source: > Axion like particles (ALPs) are particularly well motivated candidates for dark matter, and physics beyond the Standard Model more generally. However, direct detection remains extremely challenging due to the weakness of their interactions. In this work, we propose to employ space-based optical lattice clock networks (SOLCN), originally targeted to probe the stochastic gravitational wave background (SGWB), to detect axion dark matter through cosmic birefringence via minor modifications to their laser links. Searching for cross-correlated signals then provides significant sensitivity to low mas… - **[Two-loop QCD contribution to the quark-initiated production of a top-antitop quark pair and a Higgs boson at the LHC](https://space-kitty.com/papers/arxiv:2610.40266)**. Xiang Chen, Massimiliano Grazzini, Stefan Kallweit · 2026 (arXiv:2610.40266). Source: > We present the first direct computation of the two-loop QCD virtual corrections to the production of a top-antitop quark pair in association with a Higgs boson ($t\\bar{t}H$) at the LHC. We focus on the quark-antiquark channel and perform the calculation in the generalised leading-colour approximation. We combine state-of-the-art numerical methods for multiloop calculations with machine learning techniques to construct a surrogate amplitude suitable for accurate cross section computations. We compare our numerical results with those previously obtained using dynamical approximations of the two-… - **[Probabilistic Energy-Based Neural Networks for Uncertainty-Aware Collider Data Analyses](https://space-kitty.com/papers/arxiv:2610.40268)**. Raymundo Ramos, Ahmed Hammad, Amit Chakraborty et al. · 2026 (arXiv:2610.40268). Source: > We introduce a probabilistic energy-based Neural Network (NN) for uncertainty-aware classification in collider analyses. Standard discriminative classifiers can give highly confident predictions even for events that are different from the data used during training. Energy-Based Models provide an alternative by assigning an energy score to each event, which measures how well the event agrees with the learned data distribution. In this framework, a NN maps the input features into a latent space, where the energy is defined with respect to class-specific embeddings. This allows the model to ident… - **[FCC-μe: High Energy, High Luminosity Muon-Electron Collider & Neutrino Factory at CERN](https://space-kitty.com/papers/arxiv:2610.40451)**. K. Piotrzkowski · 2026 (arXiv:2610.40451). Source: > The concept is presented of making at the FCC-$ee$ (or CEPC) facility $μ^+e^-$ collisions at the centre-of-mass energy between 1 and 2 TeV and the average luminosity above $10^{34}$cm$^{-2}$s$^{-1}$, concurrently to the $e^+e^-$ collisions. First, a concise scientific motivation is given, including the exciting prospect of measurements of the Higgs boson self-interaction, and is followed by a presentation of the FCC-$μe$ layout -- from the source of ultra-cold anti-muons, through the muon booster, to the main muon ring. Basic considerations are also given regarding the machine-detector interfa… - **[Magnetotransport experiments on side-contacted topological insulator three-terminal Josephson junctions](https://space-kitty.com/papers/arxiv:2610.40083)**. Christoph Wassmer, Ella Nikodem, Oliver Breunig et al. · 2026 (arXiv:2610.40083). Source: > Multiterminal Josephson junctions have recently attracted substantial attention. The ability to study Andreev bound states in a multi-phase parameter space opens up exciting avenues for generating topologically non-trivial phases in superconducting devices. A particularly interesting case is the trijunction based on a topological insulator (TI), which is predicted to host Majorana zero modes for suitable phase configurations (Fu and Kane, PRL 2008). Here we turn to the platform of the side-contacted TI trijunction and present experimental evidence for a multiterminal Josephson effect. We study… - **[Three-dimensional QCA that are not stably circuits](https://space-kitty.com/papers/arxiv:2610.40235)**. Bowen Yang · 2026 (arXiv:2610.40235). Source: > We prove that the three-dimensional chiral $\\Z\_p$ Clifford quantum cellular automata of Haah and of Sun--Yang--Wang--Tantivasadakarn--Chen are, for every odd prime $p$, not finite-depth quantum circuits, even after tensoring with arbitrary ancillary degrees of freedom and composing with translations. Previously such statements were known only inside the Clifford category. As a consequence, the group of three-dimensional QCA modulo stabilized circuits and translations is not finitely generated. The key ingredient is a new invariant of invertible subalgebras, which we conjecture to be the square… - **[Transport in spinful non-Hermitian gauge lattices](https://space-kitty.com/papers/arxiv:2610.40317)**. Hamed Ghaemi-Dizicheh, Shahram Dehdashti, Janis Nötzel · 2026 (arXiv:2610.40317). Source: > We extend the generalized transfer-matrix method introduced in \[H. Ghaemi-Dizicheh, Phys.\\ Rev.\\ B \\textbf{107}, 125155 (2023)\] to one-dimensional spinful non-Hermitian tight-binding lattices with matrix-valued Abelian and non-Abelian gauge couplings. We derive a minimal channel-resolved transfer matrix and identify its eigenvalues with the generalized Bloch factors. The same transfer matrix determines the periodic- and open-boundary spectra, generalized Brillouin zone, skin localization, and finite-sample scattering conditions. In the Abelian limit, the model separates into fixed spin sectors… --- Space Kitty Archive · https://space-kitty.com · API: https://space-kitty.com/api/v1 · MCP: https://space-kitty.com/mcp · Premium: $0.20/request via x402 (Base Sepolia (testnet)). Metadata: arXiv (CC0), OpenAlex (CC0), Europe PMC (CC BY/CC0 works), ClinicalTrials.gov.