Bosonic Dark Matter Cores Can Screen Scalar-Tensor GravityWe examine the observational viability of scalarized fermion-boson stars (FBSs) in massless Damour-Esposito-Farèse gravity, using the MPA1 nuclear equation of state and a self-interacting complex…Jorge Castelo Mourelle, Saeed Fakhry, Néstor Ortiz·Oct 28, 2026SaveLearn
Isospectrality breaking in the axial quasinormal modes of Reissner-Nordström black holes in dynamical Chern-Simons gravityWe study odd-parity perturbations of Reissner-Nordström black holes in dynamical Chern-Simons gravity. The dCS action is parity invariant because \,*RR is the product of two…Abhishek Rout·Oct 28, 2026SaveLearn
Gravitational field of spinors with torsion and matter-antimatter asymmetryThe conservation law for the orbital plus spin angular momentum of a free Dirac particle in curved spacetime requires that the affine connection has the antisymmetric part: the torsion tensor, which…Nikodem Popławski·Oct 28, 2026SaveLearn
Resonance correction to time-dependent finite-size effects in Effective Field Theory of binary black hole inspiralGeneral Relativity predicts that black holes lack an internal structure and that their tidal Love numbers vanish. However, if astrophysical black holes were instead ultra-compact objects (UCOs) with…Shani Avitan, Ram Brustein·Oct 28, 2026SaveLearn
Exact Rotating Wormholes in Five Dimensions and Their Exceptional-Point InstabilityWe give an independent closed-form construction of rotating five-dimensional Ellis--Bronnikov wormholes with equal angular momenta and analyze the radial instability of the reflection-symmetric…Jose Luis Blázquez-Salcedo, Luis Manuel González-Romero, Fech Scen Khoo et al.·Oct 28, 2026SaveLearn
Quasinormal Modes of a Rotating Hořava Black Hole: Two Perturbative Approaches to NonseparabilityQuasinormal modes (QNMs) provide a powerful probe of strong-field gravity. We study fundamental scalar quasinormal modes of an asymptotically flat rotating black hole in the low-energy sector of…Wen-Di Guo, Wentao Liu, Yu-Xiao Liu·Oct 28, 2026SaveLearn
Hamiltonian Analysis of the Newer General RelativityWe present a systematic Hamiltonian analysis of the five-parameter class of theories known as Newer General Relativity. Quadratic nonmetricity theories of this type can be divided into nine types…Chen-Yi Sia, Tee-How Loo, Avik De·Oct 28, 2026SaveLearn
Axion-angle dependence of the rotational and tidal properties of PNJL quark starsWe investigate how a fixed, spatially uniform axion angle modifies the rotational and static tidal properties of self-bound quark stars in general relativity, using an axion-extended Polyakov-loop…Safiqul Islam, Ayan Banerjee, Javlon Rayimbaev et al.·Oct 28, 2026SaveLearn
Gravitational baryogenesis in Gauss-Bonnet braneworld cosmologyThe present study investigates the feasibility of gravitational baryogenesis in a Gauss-Bonnet (GB) modified Randall-Sundrum (RS) type II braneworld cosmology. The modified expansion rate of the…Ian B Whittingham·Oct 28, 2026SaveLearn
Physical Effects in the Vicinity of Black HolesGeneral relativity, a theory that is already over a century old, is still the best theory that we have to describe the universe at energy scales where only the gravitational force is important. It…Alex Koek·Oct 27, 2026SaveLearn
Systematic High Overtone Expansion of Kerr Quasinormal ModesWe develop a systematic method to compute the high overtone expansion of Kerr quasinormal modes on normal angular branches to arbitrary order. We first obtain the expansion of the angular eigenvalue…Yasuyuki Hatsuda·Oct 27, 2026SaveLearn
Apparent horizon mergers in analytic intial dataFive years ago Pook-Kolb, Hennigar and Booth published a series of three papers exploring the evolution of apparent horizons and other marginally outer trapped surfaces during a black hole merger.…Federico Elizondo Lopez, Ivan Booth·Oct 27, 2026SaveLearn
Quantum gravity phenomenology in quadrupolar Bose-Einstein condensates: Finite-temperature thermodynamics and projected boundsWe study the thermodynamics of quadrupolar Bose-Einstein condensates in the realm of the generalized uncertainty principle (GUP) for the quest of understanding and testing quantum gravity (QG). Using…Asma Tahar Taiba, Abdelaali Boudjemaa·Oct 27, 2026SaveLearn
Inverse design of scalar-tensor EFT from odd-parity effective potentialsWe develop an inverse-design approach to the effective field theory (EFT) of perturbations in scalar-tensor gravity around static and spherically symmetric backgrounds with a timelike scalar-field…Kazufumi Takahashi, Yuki Watanabe·Oct 27, 2026SaveLearn
Primordial Gravitational Waves in Loop Quantum Cosmology: Regularization Ambiguities and Initial State DependenceWe compute the primordial tensor power spectrum in standard loop quantum cosmology and in the modified models mLQC-I and mLQC-II, evolving the tensor perturbations across the bounce in the hybrid and…Mah Noor Jamil, Parampreet Singh·Oct 27, 2026SaveLearn
On a model of quantum quadratic gravity in 7 + 1-dimensional spacetimeWe consider a quadratic gravity model supplemented by the terms ∇μR∇μR and (∇2R)2. For specific relations among the coupling constants, the action takes a perfect-square…Vsevolod Chistiakov, Artur Mingaleev·Oct 27, 2026SaveLearn
Draining Without Emptying a Stringy Black Hole: Repetitive Electric Penrose ProcessThis paper studies the repetitive electric Penrose process in the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black hole under the optimal condition for maximum energy extraction. Unlike the…Huai-Fan Li, Xiong-Ying Guo, Ke Wang et al.·Oct 27, 2026SaveLearn
Weighing dark matter particles with gravitational wavesIt is commonly assumed that the mass of dark matter particles cannot be determined from their gravitational effects when dark matter behaves as collisionless matter. Here we show that…Rodrigo Vicente, Francisco Duque, Theophanes K. Karydas et al.·Oct 27, 2026SaveLearn
Gravitational wave signatures of periodic orbits around a Schwarzschild-like black holeWe investigate how deviations from the Schwarzschild geometry affect the motion of massive test particles and the gravitational radiation associated with their periodic trajectories around a new…Mirzabek Alloqulov, Sanjar Shaymatov, Bobomurat Ahmedov et al.·Oct 27, 2026SaveLearn
One Method to Find Them All: Analytic Black Holes beyond EinsteinRotating black holes offer powerful probes of gravity, but constructing their geometries beyond vacuum general relativity remains challenging. Here we develop a unified framework for constructing…Dongjun Li, Jierui Hu, Nicolás Yunes·Oct 27, 2026SaveLearn
Quasinormal Ringing of a Schwarzschild Black Hole Surrounded by a King Dark Matter Halo: Higher-Order WKB AnalysisWe study scalar and electromagnetic perturbations of a Schwarzschild black hole (BH) surrounded by a dark matter halo described by the King density profile. The lapse function can be expressed as…Semra Gurtas Dogan, Hassan Hassanabadi, Abdullah Guvendi·Oct 27, 2026SaveLearn
Geodesic dynamics and tidal forces in a quantum-regularized black hole from string T-dualityIn this work, we investigate the geodesic dynamics and tidal force effects in neutral and electrically charged regular spacetimes inspired by T-duality. We first analyze the geometric properties of…G. Alencar, Micael S. Oliveira, Diego Sáez-Chillón Gómez et al.·Oct 27, 2026SaveLearn
Noether Symmetries in Scalar--Vector--Two-Form Cosmology with a Topological BF InteractionWe study a canonical scalar field coupled to isotropic triplets of Abelian one-forms and two-forms through scalar-dependent kinetic functions and a constant topological BF interaction. By retaining…Amin Rezaei Akbarieh, Yusuf Kucukakca·Oct 27, 2026SaveLearn
Thermodynamics and phase structure of rotating Hayward-AdS black holesWe use the modified Newman--Janis algorithm to obtain the rotating ``mother'' black hole solution of the rotating Hayward-AdS black hole. We further derive the fundamental thermodynamic…Qi-Quan Li, Yu Zhang, Hoernisa Iminniyaz·Oct 27, 2026SaveLearn
Genesis in Minimally Modified GravityWe construct a Genesis scenario within the framework of a type-II minimally modified gravity. The background solution is past geodesically complete and approaches Minkowski spacetime in the…Alexander Ganz, Paul Martens, Shinji Mukohyama et al.·Oct 27, 2026SaveLearn