gr-qc
72.7k resultsA Simple Pendulum in Schwarzschild Spacetime
Andrzej Czarnecki, Andrew Czezowski
Self-Forces as Nonlocal Probes of Gravastar Interiors
Bokai Zhang, Yungui Gong, Anzhong Wang
Excitation region of Kerr black hole quasinormal modes from Stokes geometry
Naritaka Oshita
Deviation of trajectories in nonrelativistic and relativistic cases and Shirokov effect
Yu. V. Pavlov, V. P. Vandeev
The brachistochrone problem for a constant velocity traveler in static and spherically symmetric spacetimes
Longfei Wang, Junji Jia
Resolution of Infrared Entanglement Divergences via the Extended Uncertainty Principle
Subhra Mondal, S. Shankaranarayanan
How greedy is the Universe? An entropy ledger and a causal envelope for early black hole growth
Fernando Izaurieta, Cristian Quinzacara, Omar Valdivia
Optical Landscapes and High-Energy Collisions in Hairy Horndeski Gravity
Filipe Cattete Alves, Rodrigo Maier
Can machine learning improve the detectability and disentanglement of the gravitational-wave background?
Hugo Einsle, Marie Anne Bizouard, Tania Regimbau +2
Stationary scalar clouds, quasinormal ringing, and observational signatures of (near-)extremal rotating Kalb-Ramond black holes: from the superradiant threshold to EHT bounds
Gülnihal Tokgöz, İzzet Sakallı
Kerr black holes with vector dark matter hair
Fredric Hancock, Helvi Witek
Obstructions to Traversable Wormholes in Einstein-Dirac Theory
Robert J. Weinbaum
Extending the Comisso-Asenjo Energy Extraction Mechanism to Pure Lovelock Gravity
Chen Zhou, Ikhtiyor Eshtursunov, Sanjar Shaymatov +1
Tidal Love numbers of multi-state Boson stars
Xin-Lei Zhao, Jun-Ru Chen, Yong-Qiang Wang
The paper calculates the electric and magnetic quadrupolar tidal Love numbers of multi‑state boson stars composed of ground‑state and first‑excited‑state scalar fields, examining h…
Degenerate Limits of Scalar-Tensor Gravity
Bekir BaytaÅ, Xiao-Kan Guo
The paper analyzes how scalar‑tensor gravity behaves when the spatial triad becomes degenerate, using a Hamiltonian connection‑dynamics approach to derive the resulting constraints…
High-accuracy drivers to simulate black hole binaries beyond general relativity with the fixing-the-equations approach
Guillermo Lara, Harald P. Pfeiffer, Nils Deppe +9
The paper implements a fixing‑the‑equations method in the Spectre code to generate accurate numerical‑relativity waveforms for black‑hole binaries in shift‑symmetric scalar Gauss‑B…
Logarithmic corrections to black hole entropy from minimum-assumptions discretization
Pelayo V. Calzada, Ana Alonso-Serrano, Ernesto Contreras +1
The paper presents a minimal-assumption model that discretizes a black‑hole horizon into Planck‑scale cells and uses combinatorial counting to derive the entropy area law together…
Quartic Scalar Clouds on Fixed Kerr Backgrounds
Hendrik Mennenga
The paper investigates stationary nonlinear scalar field configurations (Q‑clouds) on fixed Kerr and Schwarzschild black hole backgrounds, analyzing quartic and axion‑inspired pote…
Homogeneous and Isotropic Linearized Gravity as a Caldeira--Leggett System
Pelayo V. Calzada, Pedro Bargueño
The paper demonstrates that homogeneous and isotropic linearized gravity can be mapped onto a Caldeira–Leggett open‑system model, yielding a generalized Langevin equation for metri…
Ab Initio Real-Time Gravitational-Wave Parameter Estimation
David Yallup, Metha Prathaban, James Alvey +4
The paper introduces a GPU‑optimized nested sampling algorithm that can perform rapid, full‑waveform gravitational‑wave parameter estimation for binary neutron star events, achievi…
Post-Newtonian Roche-Lobe-Overflow Prescription for Compact Binary Mass Transfer and the Corresponding Gravitational Waveforms
Shuai Zhang, Jie Yang, Zi-Han Zhang +1
The paper derives a first post-Newtonian Roche potential and mass‑transfer prescription for compact binary systems, incorporates the resulting corrections into the binary dynamics…
The BGV Theorem and the Null Convergence Condition
William H. Kinney
The paper investigates how the Null Convergence Condition (NCC) and spatial curvature affect the applicability of the Borde‑Guth‑Vilenkin (BGV) theorem, showing that NCC and non‑po…
Towards long and accurate numerical relativity waveforms of binary black holes beyond general relativity
Guillermo Lara, Harald P. Pfeiffer, Nils Deppe +9
The paper presents long, accurate numerical relativity simulations of equal‑mass, nonspinning binary black holes in shift‑symmetric scalar Gauss‑Bonnet gravity, generating waveform…
Signatures of kinetic gravity braiding in cosmological probes of the gravitational field
Ahmad Nouri-Zonoz, Farbod Hassani, Julian Adamek +2