Tidal Stripping of Matter Bound to the Secondary in Extreme Mass-Ratio InspiralsEnvironmental studies of extreme mass-ratio inspirals (EMRIs) have focused almost entirely on matter surrounding the primary supermassive black hole. We instead consider matter bound to the…Sreejith Nair, Sayak Datta·Jun 12, 2026SaveLearn
An inductive approach to f(R) gravity and its application to extended sourcesIn a previous work (Phys. Rev. D 110, 064042), a new family of f(R) gravitational Lagrangians was constructed inductively using only Solar System physics. Specifically, the modified Einstein…Federico Scali·Jun 12, 2026SaveLearn
Perturbative and Non-Perturbative Contributions to Black Hole Thermodynamics with String Clouds and Dark Matter BackgroundsWe investigate the effects of perturbative and non-perturbative quantum corrections on the thermodynamics of black holes immersed in a perfect fluid dark matter (PFDM) background with a cloud of…Kumar Sambhav Upadhyay, Sudhaker Upadhyay, Bhabani Prasad Mandal·Jun 12, 2026SaveLearn
Searching for Extra Dimensions with Gravitational Waves: Dark-Siren Constraints from GWTC-4Higher-dimensional theories of gravity predict that gravitational waves (GWs) can propagate into extra spatial dimensions, leading to modified amplitude damping over cosmological distances.…Anson Chen, Jun Zhang·Jun 12, 2026SaveLearn
Modeling dark matter as self-bound quantum liquid dropletsThe Bose-Einstein condensate dark matter model, where dark matter can be thought of as a non-relativistic, Newtonian gravitational condensate, has recently attracted a great deal of interest. In the…Abdelaali Boudjemaa·Jun 12, 2026SaveLearn
Spinning test particles in the spacetime of a global monopoleWe investigate the motion of spinning test particles in the spacetime of a global monopole in the framework of the Mathisson-Papapetrou-Dixon equations. By making use of the symmetries of the…Morteza Mohseni, Saurya Das·Jun 12, 2026SaveLearn
Sachs-Wolfe effect as a smoking gun for cosmological gravitational wave backgroundsThe Sachs-Wolfe (SW) effect, arising from large-scale structures in the universe, modifies the frequencies of gravitational waves (GWs) sourced by a cosmological background. We show that for…Giorgio Mentasti, Leon Vidal, Quentin Baghi et al.·Jun 12, 2026SaveLearn
Majorana Neutrinos in Sandwich Wave Spacetimes: Flavor Modulation and Helicity TransitionsWe present the propagation of massive Majorana neutrinos crossing an exact gravitational sandwich wave background. By employing a Takagi factorization to decouple the matrix field equations, We show…Yorgo Senikoglu·Jun 12, 2026SaveLearn
Note on the local calculation of decoherence of quantum superposition in the static black holesWe investigate the decoherence of a quantum spatial superposition of a static particle in Schwarzschild and Reissner-Nordström black holes. By treating the particle as a localized classical source…Ran Li, Zhong-Xiao Man, Jin Wang·Jun 12, 2026SaveLearn
Refocusing of Wheeler--DeWitt wave functions at inner horizonsWe study quantum gravitational effects inside hyperbolic black holes with both outer and inner horizons by solving the Wheeler--DeWitt (WDW) equation in the minisuperspace approximation. The WDW…Takeshi Chiba, Keiju Murata, Daiki Saito·Jun 12, 2026SaveLearn
A theory agnostic uniqueness theorem for the Kerr solutionIn this paper, we show that under a suitable set of symmetry arguments and asymptotic conditions, the uniqueness of the Kerr solution can be proven. None of the conditions considered herein…Joshua Baines·Jun 12, 2026SaveLearn
Late-Transition Interacting Thawer Dark Energy: Model Definition and Benchmark Consistency TestsWe formulate the late-transition interacting thawer (LTIT) as a late-activating, variable-coupling realization of coupled quintessence in which a canonical scalar field couples conformally only to…Slava G. Turyshev, Diogo H. F. de Souza·Jun 12, 2026SaveLearn
Observer-robust energy condition verification for warp drive spacetimesEnergy-condition tests for warp-drive spacetimes must account for all admissible causal directions at each point. We use the classical S-lemma to express the null, weak, and strong conditions as…An T. Le·Jun 12, 2026SaveLearn
Strong field gravitational lensing of particles by a black-bounce-Schwarzschild black holeThe gravitational lensing of relativistic and nonrelativistic neutral massive particles in the black-bounce-Schwarzschild black hole spacetime is investigated in the strong deflection limit.…Guansheng He, Jiaxu Huang, Zhongwen Feng et al.·Jun 12, 2026SaveLearn
Beyond Comoving Volume: Horizon Flux and Matter Creation in Modified Cosmology from the Unified First Law of ThermodynamicsWe explore the derivation of the Friedmann equations from a thermodynamic perspective, applying the unified first law of thermodynamics to the apparent horizon of a flat…Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe·Jun 12, 2026SaveLearn
Wormhole Solutions and Pre-inflationary Epoch in F(R, T) Gravity with Axion FieldsThis study investigates axion-dilaton wormhole solutions within the framework of F(R,T) gravity to resolve the issue of insufficient inflationary e-folds in the no-boundary proposal. By examining…Guo-He Li, Yeqi Fang, Yuchi Wu et al.·Jun 12, 2026SaveLearn
Stable initial conditions and analytical investigations of cosmological perturbations in a modified loop quantum cosmologyIn this paper, we study cosmological perturbations in a modified theory of loop quantum cosmologies, the so-called mLQC-I model. Our purposes are two-fold: First, using a method developed by Birrell…Rui Pan, Jamal Saeed, Anzhong Wang·Jun 12, 2026SaveLearn
Non-minimally coupled scalar field dark sector of the universe: in-depth (Einstein frame) case studyIn this study, motivated by recent results from DESI DR2 indicating a possible preference for evolving dark energy in some combined data analyses, we analyze spatially flat FLRW interacting…Marcin Postolak·Jun 12, 2026SaveLearn
Exact Solutions with Asymptotically Flat Galactic Rotation CurvesWe present a new set of spacetime solutions for spiral galaxies corresponding to flat rotation curves at large distances. These correspond to anisotropic pressure, which could be sourced by either…Sandipan Sengupta·Jun 12, 2026SaveLearn
Semiclassical Gravity Efficiently Solves NP-Complete ProblemsAssuming the gravitational field is classical and that it couples to quantum fields via the semiclassical Einstein field equations, we show that the weak-field dynamics of a massive and…Matthew Fox, Chaitanya Karamchedu, Sotirios Mygdalas·Jun 11, 2026SaveLearn
Binary Black Hole Parameter Estimation with Hybrid CNN-Transformer Neural NetworksThe detection of gravitational waves has revolutionized our ability to explore fundamental aspects of the Universe. Traditionally, modeled gravitational-wave signals have been identified using…Panagiotis N. Sakellariou, Spiros V. Georgakopoulos, Sotiris Tasoulis et al.·Jun 11, 2026SaveLearn
Black hole physics within f(R) gravity: Quasi-normal spectra and greybody factorsWe investigate several astrophysical motivated properties of a four-dimensional black hole solution in the framework of f(R) gravity. The model is characterized by a single additional parameter,…Ángel Rincón, Grigoris Panotopoulos·Jun 11, 2026SaveLearn
Mode decomposition methods for the analysis of black hole ringdown signalsThe ringdown phase of a binary black hole merger encodes fundamental information about the remnant through its quasinormal mode (QNM) spectrum. Extracting multiple modes from gravitational-wave data…Andrzej Krolak, Massimo Tinto·Jun 11, 2026SaveLearn
Universality in the Transition from Inspiral to Plunge for Extreme-Mass-Ratio-Inspirals: High-Accuracy Analytic Solutions and Catastrophe TheoryWe revisit the transition from inspiral to plunge for extreme mass-ratio inspirals on quasi-circular, inclined orbits in Kerr spacetime from the perspective of catastrophe theory. Our goal is to…Ariadna Ribes Metidieri, Béatrice Bonga, Badri Krishnan et al.·Jun 11, 2026SaveLearn
Relativistic and Newtonian Proca Stars: A Tale of Two LimitsWe investigate a representative set of static solitonic solutions of the Einstein-Proca theory in the Newtonian regime, where the field frequency approaches the particle mass, ω μ, and compare…Alberto Diez-Tejedor, Carlos Herdeiro, Claudio Lazarte et al.·Jun 11, 2026SaveLearn