Resonant transmission of scalar waves through rotating traversable wormholeThe viability of traversable wormholes as exotic compact objects requires the identification of signatures that distinguish them from other compact objects. Given recent advances in observing…Rajesh Karmakar, Bum-Hoon Lee, Wonwoo Lee·May 10, 2026SaveLearn
Anisotropic Cosmology with interacting Dark Energy in f(R,T) Gravity: A Data-Constrained & independent ApproachIn this work, we investigate the cosmological dynamics of an anisotropic Universe within the framework of f(R,T) gravity by incorporating pressureless dark matter and the dark energy models. The…S. H. Shekh, N. Myrzakulov, Anirudh Pradhan et al.·May 9, 2026SaveLearn
Neutron stars in a conservative f(R,T) gravityWe investigate a conservative formulation of f(R,T) gravity motivated by a key limitation of several existing approaches: the gravitational function is often reconstructed from a chosen equation of…Ronaldo V. Lobato, Geanderson A. Carvalho, Carlos E. C. Montaña et al.·May 9, 2026SaveLearn
Late-Time Cosmic Acceleration in Ricci-Gauss-Bonnet Gravity via Gradient Descent OptimizationWe study the late-time evolution of the Universe within the f(R,G) gravity framework, where R is the Ricci scalar and G is the Gauss-Bonnet term. To make the model tractable, we propose a…Santosh V. Lohakare, B. Mishra, S. K. Maurya·May 9, 2026SaveLearn
Gravitational waveform from radial infall at the third-and-half Post-Newtonian orderWe compute the gravitational waveform associated with a radially infalling particle in a Schwarzschild black hole working in the center-of-mass system and in a post-Newtonian (PN) approximation. Our…Giorgio Di Russo, Donato Bini·May 9, 2026SaveLearn
General Grad-Shafranov EquationTo effectively describe the plasma with strong magnetic field, the force-free electrodynamics was introduced, within which the Grad-Shafranov equation plays the key role. The Grad-Shafranov equation…Ye Shen·May 9, 2026SaveLearn
Black hole mass and distance from accretion disk astrophysical observablesIn this work we derive novel analytical expressions for the mass and distance of a Schwarzschild black hole (BH), as well as for the orbital radius of test particles orbiting it, it terms of…J. R. Fernández-Moreno, A. González-Juárez, A. Herrera-Aguilar·May 9, 2026SaveLearn
The Good, the Bad, and the Subtle: Relativistic mode sums for neutron-star tidal responseTime-dependent tidal interactions during the late inspiral of binary neutron stars encode valuable information about neutron-star structure, but systematically extending the familiar Newtonian…Abhishek Hegade K. R., K. J. Kwon, Tejaswi Venumadhav et al.·May 9, 2026SaveLearn
Shaving off soft hairs and the black hole image memory effectSoft hairs of black holes are the Noether charges associated with the generalized Bondi-Metzner-Sachs symmetries. In this work, the images of soft-haired Kerr black holes are studied. For an eternal…Shaoqi Hou, Zong-Hong Zhu·May 9, 2026SaveLearn
Compact Stars in Symmetric Teleparallel Scalar-Tensor GravityWe investigate the existence of static, spherically symmetric compact objects within the framework of symmetric teleparallel scalar-tensor gravity. This theory extends the Brans-Dicke and…Grigorios Panotopoulos, Andrés Lueiza-Colipí, Nikolaos Dimakis et al.·May 9, 2026SaveLearn
DESI and Dynamical Dark Energy from Extended Pre-geometric GravityWe consider the simplest quadratic extension of MacDowell--Mansouri pre-geometric gravity that preserves the topological pre-volume-form symmetry. Upon symmetry breaking, the theory reduces to…Andrea Addazi, Yermek Aldabergenov, Daulet Berkimbayev et al.·May 8, 2026SaveLearn
Large black holes at a finite distance: Quasi-local restricted phase space formalismWe extend the restricted phase space formalism for spherically symmetric black hole solutions of Einstein-Maxwell theory to the quasi-local regime, with the static observers located at a finite…Bai-Hao Huang, Liu Zhao·May 8, 2026SaveLearn
Unique Gravitational-Wave Signals from Negative-Mass BinariesNegative masses have long been explored, but their observational viability remains unclear. In this work, we develop a unified, observationally testable framework to constrain negative masses using…Oem Trivedi, Abraham Loeb·May 8, 2026SaveLearn
Bipartite temporal Bell inequality for squeezed coherent state of inflationary perturbationsWe investigate the role of the bipartite temporal Bell inequality, an analogue of the spatial Bell inequality, in probing the quantum imprints of primordial perturbations when the initially chosen…Aurindam Mondal·May 8, 2026SaveLearn
Uncertainty Principles and Maximum Entropic ForceWe consider quantum gravity corrections to the maximum entropic force that arise from several gravitational uncertainty principles. These include the Generalized Uncertainty Principle (GUP), the…Jonas Mureika, Elias C. Vagenas·May 8, 2026SaveLearn
Gravitational Wave Memory in Beyond GR TheoriesGravitational-wave memory is a low-frequency, non-oscillatory signal that provides a promising probe of strong-field gravity. We present the first computation of memory from full…Silvia Gasparotto·May 8, 2026SaveLearn
Traversable wormholes in f(Q) gravity: Energy conditions, stability and quasinormal modesWe investigate static and spherically symmetric traversable wormhole solutions in the framework of f(Q) gravity by considering a power-law model of the form f(Q)=γ(-Q)m. By adopting an…Jaydeep Goswami, Rupam Jyoti Borah, Umananda Dev Goswami·May 8, 2026SaveLearn
Formulation of testing gravitational redshift based on Laser Time link between China Space Station and a ground stationThis paper presents a high-precision gravitational redshift test using the China Space Station (CSS) Laser Time Transfer (CLT) system. We develop a comprehensive observation equation based on a…Rui Xu, Wenbin Shen, Hok Sum Fok et al.·May 8, 2026SaveLearn
Probing Gravitational Wave Signatures from Periodic Orbits of Regular Black Holes in Asymptotically Safe GravityWe investigate bound and periodic timelike geodesics and their associated gravitational-wave (GW) signatures in the spacetime of a regular black hole arising in asymptotically safe gravity (ASG). The…Arun Kumar, Abolhassan Mohammadi, Sushant G. Ghosh·May 8, 2026SaveLearn
Scattering from compact objects: Debye series and Regge-Debye polesWe investigate elastic scattering by a compact, horizonless body in curved spacetime, considering a massless scalar wave incident on a static, spherically symmetric, uniform-density star of radius…Mohamed Ould El Hadj·May 8, 2026SaveLearn
Implications of the LISA stochastic signal from eccentric stellar mass black hole binaries in vacuumAstrophysical formation channels of stellar-mass binary black holes (sBBHs) can induce significant orbital eccentricities in their early inspiral. We analyze the implications on the stochastic…Ran Chen, Rohit S. Chandramouli, Federico Pozzoli et al.·May 7, 2026SaveLearn
Towards black-hole horizons and geodesic focusing in causal setsThe event horizon of a black hole is arguably the most dramatic manifestation of the fact that in General Relativity, causal structure is dynamical and spacetimes can be separated into distinct…Astrid Eichhorn, Pedro Gamito, Nawder Stokes·May 7, 2026SaveLearn
Quasi-homogeneous black hole geometrothermodynamics in Einstein-Maxwell theoryIn this review, we establish the mathematical framework of geometrothermodynamics (GTD) as a formalism capable of describing non-extensive, quasi-homogeneous, self-gravitating systems in a…Hernando Quevedo·May 7, 2026SaveLearn
Spin and Quadrupole Sectors in Nonrelativistic GravityWe study the large-c expansion of general relativity in ADM variables. Using a unified even ω-expansion, the ADM formulation gives a common starting point for Galilean and Carrollian limits. We…Utku Zorba·May 7, 2026SaveLearn
Cosmological Dynamics of a Non-Canonical Generalised Brans-Dicke TheoryThe LCDM model has been presented with a number of cosmic tensions in the face of precision cosmological data, suggesting the presence of a dynamical dark energy component. In this context, we…Matthew Debono, Jackson Levi Said, Gabriel Farrugia·May 7, 2026SaveLearn