Global Structure in Learned Latent Representations of Confusion-Limited LISA DataMachine learning methods in gravitational wave data analyses depend on the choice of representation and on how structure within that representation is used. Building on previous work using continuous…Jericho Cain·Jul 16, 2026SaveLearn
Numerical evaluation of the exact post-Newtonian parameters in Brans-Dicke and entangled relativity theoriesIn context of Brans-Dicke scalar-tensor theories of gravity, it has recently been obtained that the post-Newtonian parameters should be generalized in the context of strongly gravitating bodies, and…Thomas Chehab, Olivier Minazzoli·Jul 16, 2026SaveLearn
Is Phantom Divide Crossing in General Relativity Completely Impossible? Shortcomings in canonical and minimally coupled scalar field and Possible Solutions in k-essence ModelsGeneral relativity has its successes at the local astrophysical level, however, it seems to be insufficient in describing the Universe at large scales. In this work we investigate how the most…Shin'ichi Nojiri, S. D. Odintsov, V. K. Oikonomou·Jul 16, 2026SaveLearn
Higgs-like inflation in scalar-torsion f(T,ϕ) gravity in light of ACT-SPT-DESI constraintsWe study Higgs-like inflation in the framework of scalar-torsion gravity, focusing on the general class of f(T,ϕ) theories in which gravitation is mediated by torsion rather than curvature.…Nitesh Kumar, Giovanni Otalora, Rodrigo Reyes et al.·Jul 16, 2026SaveLearn
Sources of matter for wormholes in a k-essence theoryIn this work, we analyze some matter sources associated with wormhole models within a k-essence theory coupled to the gravitational sector through a phantom scalar field. We adopt a spherically…Marcos V. de S. Silva, Carlos F. S. Pereira, Bruna Bragato et al.·Jul 16, 2026SaveLearn
Characterizing Signalling: Connections between Causal Inference and Space-time GeometryCausality is pivotal to our understanding of the world, presenting itself in different forms: information-theoretic and relativistic, the former linked to the flow of information, the latter to the…Maarten Grothus, V. Vilasini·Jul 16, 2026SaveLearn
Prospects for cosmological constraints using gravitational wave memoryThe ΛCDM model has long served as a robust and predictive framework for cosmology, successfully explaining a wide range of observations, including the accelerated expansion of the Universe. However,…Indranil Chakraborty, Susmita Jana, S. Shankaranarayanan·Jul 16, 2026SaveLearn
SEOBNRv5PHM: Next generation of accurate and efficient multipolar precessing-spin effective-one-body waveforms for binary black holesSpin precession is one of the key physical effects that could unveil the origin of the compact binaries detected by ground- and space-based gravitational-wave (GW) detectors, and shed light on their…Antoni Ramos-Buades, Alessandra Buonanno, Héctor Estellés et al.·Jul 16, 2026SaveLearn
Enhancing the SEOBNRv5 effective-one-body waveform model with second-order gravitational self-force fluxesWe leverage recent breakthrough calculations using second-order gravitational self-force (2GSF) theory to improve both the gravitational-mode amplitudes and radiation-reaction force in…Maarten van de Meent, Alessandra Buonanno, Deyan P. Mihaylov et al.·Jul 16, 2026SaveLearn
Acceleration radiation and HBAR thermodynamics for atoms falling into a BTZ black hole: A CQM quantum-optics approachAtoms falling freely into a Bañados-Teitelboim-Zanelli (BTZ) black hole in a Boulware-like vacuum are shown to emit radiation with a Planck spectrum at the Hawking temperature TH. This leads to…H. E. Camblong, A. Chakraborty, C. R. Ordóñez et al.·Jul 15, 2026SaveLearn
Coupled by Design: Computing Kerr-Newman Quasinormal Modes with a Hybrid SpectralPINN SolverWe extend our SpectralPINN solver to the computation of Kerr-Newman quasinormal modes by applying it to solve the system of two coupled master PDEs -- advancing from the single, separable…Alexandre M. Pombo·Jul 15, 2026SaveLearn
Novel topological subclass in Bardeen-AdS-class black holesBased on the ϕ-mapping topological current theory, we systematically investigate the thermodynamic topology of regular Bardeen-AdS-class black holes coupled to nonlinear electrodynamics, a class of…Yu-Die Wan, Peng Zhao, Zheng-Wen Long·Jul 15, 2026SaveLearn
Probing Quantum Gravity through Chaotic Orbits and Strong-Field Effects in Kerr Black Holes Embedded in Perfect Fluid Dark MatterWe study the nonlinear photon dynamics in quantum improved rotating black hole surrounded by perfect fluid dark matter (PFDM) using several methods of analysis, including Poincaré sections, Lyapunov…Shubham Kala, Sara Saghafi, M. Yousaf et al.·Jul 15, 2026SaveLearn
Breaking the Degeneracy: Spectral Hardening of Accretion Disks around Rotating Hayward Black Holes in Dark Matter HalosWe investigate the thermodynamic and observable signatures of thin accretion disks surrounding rotating, regular Hayward black holes embedded within a macroscopic dark matter (DM) envelope. The…Sandip Dutta·Jul 15, 2026SaveLearn
Entropy release from Minkowski breaking in regular Schwarzschild black holesThe classical formation of a Schwarzschild black hole from a regular, non-singular configuration has recently been shown to be impossible within general relativity: the geometry inevitably develops a…Francisco S. N. Lobo, Manuel E. Rodrigues·Jul 15, 2026SaveLearn
Solid-state gravitational-wave detectors at GHz frequencies: the search for the primordial stochastic GW background and light primordial black hole binariesReheating after inflation is one of the strongest sources of gravitational waves (GW), producing a stochastic background (SGWB) with a non-thermal spectrum peaked at frequencies of order a few GHz.…Juan Garcia-Bellido·Jul 15, 2026SaveLearn
Testing the Transverse Scalar Mode of Gravitational Quantum Field Theory with Taiji and LISASpace-based gravitational-wave (GW) detectors, including LISA and Taiji, offer unprecedented access to regimes where alternative theories of gravity may deviate from General Relativity (GR).…Cong Xu, Yong Tang, Yue-Liang Wu·Jul 15, 2026SaveLearn
Corrections to inflationary models induced by non-minimal coupling between scalar field and curvatureIn this paper, we consider possible corrections to the characteristics of inflationary models based on a specific parametrization of the non-minimal coupling between the scalar field and curvature.…I. V. Fomin, S. V. Chervon, E. S. Dentsel et al.·Jul 15, 2026SaveLearn
Six-Field Rational Extended Thermodynamics of Polyatomic Gases in Curved SpacetimeWe formulate a generally covariant six-field Rational Extended Thermodynamics model (RET6) for relativistic polyatomic gases, with the dynamical pressure as the only non-equilibrium variable. The…Luca Gallerani, Andrea Giusti, Andrea Mentrelli et al.·Jul 15, 2026SaveLearn
Acceleration in 3D Einstein-Gauss-Bonnet GravityWe present a new class of exact solutions in Einstein-Gauss-Bonnet gravity in 2+1 dimensions that generalize the C-metric. This set of metrics equals the C-metric multiplied by a factor which, along…Cendikiawan Suryaatmadja, Dong-han Yeom, Robert Mann·Jul 15, 2026SaveLearn
Odd-parity ringdown gravitational waves of a spherically symmetric black hole with perfect fluid accretionThe ringdown waves from a black hole offer a clean probe of strong-field gravity, but a matter distribution that may be present around a realistic black hole renders the background spacetime…Rikuto Ohashi, Yasutaka Koga, Hiroyuki Nakano et al.·Jul 15, 2026SaveLearn
The Role of the Volume in Black Hole ThermodynamicsGibbons et al. [arXiv:hep-th/0408217] found the energy E of Kerr--anti-de Sitter black holes by integrating the first law of black hole thermodynamics. They found that E corresponds to the…William Ballik·Jul 15, 2026SaveLearn
Radiative steering of warp shellsWe construct exact timelike junctions between compact flat cavities and a Kinnersley photon-rocket exterior. The shells satisfy the strict surface dominant energy condition and steer subluminally…An T. Le·Jul 15, 2026SaveLearn
A Landscape of Cosmological DecoherenceCurrent observations constrain primordial perturbations to be adiabatic, approximately Gaussian, and nearly-scale invariant. However, a generic mixed state satisfying these constraints has additional…S. Shajidul Haque, Bret Underwood·Jul 15, 2026SaveLearn
Gravitational waveforms from binaries in higher-derivative gravity: a Love storyWe study the emission of gravitational waves by a test particle orbiting a non-rotating black hole in higher-derivative gravity theories with cubic and quartic contractions of the Riemann tensor. To…Pablo A. Cano, Francesco Fucito, Jose F. Morales et al.·Jul 15, 2026SaveLearn