Black hole formation by a scalar fieldThe Liouville solution in General Relativity with a scalar field is discussed. This solution is invariant with respect to global Lorentz transformations, and dependence on time cannot be removed. If…D. E. Afanasev, M. O. Katanaev·Jun 9, 2026SaveLearn
Hawking-Page phase transition for pure Lovelock black holesWe investigate the thermodynamic properties of static, spherically symmetric Anti-de Sitter (AdS) black holes, focusing on the interplay between characteristic temperatures, as well as on the…Nitesh K. Dubey, Sanved Kolekar·Jun 9, 2026SaveLearn
Stability and Physical Properties of Compact Stars Beyond Einstein GravityThis manuscript discusses feasible features of anisotropic celestial sphere within the framework of f(Q,Lm) gravity, where Q represents non-metricity scalar and…M. Sharif, Adeeba Arooj·Jun 9, 2026SaveLearn
Natural Inflation with a negative cosmological constantIn this work, we investigate a cosmic inflation model based on a cosine-type potential with a negative cosmological constant. This model originates from a classical solution of the Wheeler-DeWitt…Chia-Min Lin, Naoto Maki, Kazunori Kohri·Jun 9, 2026SaveLearn
Weak cosmic censorship for the circularly symmetric Einstein-scalar field system in 2+1 dimensionsWe prove the weak cosmic censorship conjecture in 2+1 spacetime dimensions for the circularly symmetric Einstein-scalar field system in the presence of a negative cosmological constant Λ<0. More…Serban Cicortas·Jun 9, 2026SaveLearn
Breaking Parameter Degeneracies in a Magnetically Charged Black Hole Embedded in a Hernquist Dark-Matter Halo: A Multi-Observable AnalysisWe study the degeneracy of intrinsic and environmental parameters for BH observables in a static spacetime sourced by a nonlinear magnetic monopole immersed in a Hernquist dark-matter halo. We…Ali Ovgun, Reggie C. Pantig, Joel Saavedra·Jun 9, 2026SaveLearn
Impact of numerical-relativity waveform calibration on parametrized post-Einsteinian testsTesting general relativity in the strong-field and highly dynamical regime is now possible through current gravitational-wave observations, where even a single high-quality detection can place…Simone Mezzasoma, Carl-Johan Haster, Nicolás Yunes·Jun 9, 2026SaveLearn
The initial data of effective field theories of relativistic viscous fluids and gravityThere has been recent progress in developing well-posed theories of relativistic viscous hydrodynamics and of gravitational effective field theories. These have in common the feature that they…Lorenzo Gavassino, Áron D. Kovács, Harvey S. Reall·Jun 9, 2026SaveLearn
Violation of the third law of black hole mechanics in vacuum gravityWe demonstrate numerically the existence of solutions of five-dimensional vacuum gravity describing the formation, in finite time, of an extremal rotating black hole from a pre-existing Schwarzschild…John R. V. Crump, Maxime Gadioux, Harvey S. Reall et al.·Jun 9, 2026SaveLearn
Phase space analysis of f(R) cosmologies: revisiting attractor-to-GRPhase space analysis of f(R)-Gravity, a simple generalization of Einstein's General theory of Relativity has been of interest especially in the context of Cosmology. Beyond its success in…Gahan Chattopadhyay, Soumitra Sengupta·Jun 9, 2026SaveLearn
Detecting White Dwarf Binary Mergers with Gravitational WavesMergers of white dwarf binaries are a possible progenitor channel for Type Ia supernovae. While white dwarfs are abundant in the universe and relatively well understood, their gravitational wave…Giona Sala, Chiara Brandenstein, Sebastian Baum et al.·Jun 9, 2026SaveLearn
Quantum Noise Reduction in the Space-based Gravitational Wave Antenna DECIGO Using Optical Springs and Homodyne Detection schemeThe DECi-hertz Interferometer Gravitational-wave Observatory (DECIGO) is a planned space-based, next-generation gravitational wave detector aimed at observing primordial gravitational waves…Kenji Tsuji, Tomohiro Ishikawa, Kentaro Komori et al.·Jun 9, 2026SaveLearn
Directed searches for gravitational waves from ultralight vector boson clouds around merger remnant and galactic black holes during the first part of the fourth LIGO-Virgo-KAGRA observing runWe present the first directed searches for long-transient and continuous gravitational waves from ultralight vector boson clouds around known black holes (BHs). We use LIGO data from the first part…The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration et al.·Jun 9, 2026SaveLearn
Reconciling the ACT Preference in f(T) Gravity: Inflation and Reheating ConstraintsCompared with the results of Planck-only analyses, recent measurements from the Atacama Cosmology Telescope (ACT) indicate a preference for a slightly bluer scalar spectral index, placing canonical…Feng-Yi Zhang, Rongrong Zhai, Li-Yang Chen·Jun 9, 2026SaveLearn
Carrollian R×-bundles II: Sigma Models on Event HorizonsCarrollian field theories are usually understood as limits of relativistic theories. In this note, we use Carrollian R×-bundles equipped with a principal connection to construct…Andrew James Bruce·Jun 9, 2026SaveLearn
Observational implications of Wald-Gauss-Bonnet topological dark energyWe investigate the observational implications of Wald--Gauss--Bonnet (WGB) topological dark energy, a modified cosmological framework derived from the gravity-thermodynamics conjecture applied to the…Maria Petronikolou, Fotios K. Anagnostopoulos, Stylianos A. Tsilioukas et al.·Jun 9, 2026SaveLearn
Bouncing Scenario in the f(T) Modified Gravity Model with Dynamical System AnalysisIn this work, we study nonsingular bouncing cosmology in quadratic modified teleparallel gravity f(T)=T+βT2 within a flat FLRW background. Using dimensionless variables, we derive modified…S. Davood Sadatian, S. Mohamad Reza Hosseini·Jun 9, 2026SaveLearn
An approximate application of quantum gravity to the rotation problemArbitrary initial conditions allow solutions of Einstein's field equations for General Relativity to have arbitrarily large relative rotation of matter and inertial frames. The ``Rotation…R. Michael Jones·Jun 8, 2026SaveLearn
Hawking Temperatures of Dynamical Black Holes from the RVB--Residue Method:Vaidya and Kinnersley GeometriesThis paper develops a local residue-based extension of the Robson--Villari--Biancalana method for calculating Hawking temperatures of dynamical black holes. Since non-stationary black holes generally…Wen-Xiang Chen·Jun 8, 2026SaveLearn
The Fifth RIT Catalog of Binary Black Hole Simulations: Multiple-Resolution Studies of Eccentric OrbitsThis fifth release of the RIT public catalog of numerical relativity binary black hole waveforms http://ccrg.rit.edu/~RITCatalog introduces an additional 248 configurations, prioritizing 197 newly…Giuseppe Ficarra, James Healy, Carlos O. Lousto·Jun 8, 2026SaveLearn
Geometric Matching of Local Static Regions in Cosmological Spacetimes with an Evolving LapseThe generalized cosmological time (GCT) framework introduces a modified lapse function, N(t) ab/4, as a geometric extension of the standard FLRW description. Like other departures from…Seokcheon Lee·Jun 8, 2026SaveLearn
Neutron stars in Poincaré gauge gravity with quadratic torsionWe study static neutron stars in an algebraic sector of Poincaré gauge gravity with parity-even and parity-odd quadratic torsion invariants. Since torsion is non-propagating, the contorsion equation…Chaitanya Vashistha, Radouane Gannouji, Apratim Ganguly·Jun 8, 2026SaveLearn
Modified Teukolsky Formalism for Extreme Mass-Ratio Inspirals in Higher-Derivative GravityIn this work, we study a model problem involving a point particle spiraling into a non-rotating black hole in higher-derivative theories of gravity. In such theories, both the background spacetime…Chaoyi Yang, Neev Khera, Dongjun Li et al.·Jun 8, 2026SaveLearn
Stationary scalar clouds around a rotating Kalb-Ramond BTZ black holeWe investigate the scalar clouds around a rotating Kalb-Ramond (KR) BTZ black hole under Robin boundary conditions. The clouds are obtained as stationary bound states at the superradiant threshold…Rui Ding, Fangli Quan, Zhong-Wu Xia et al.·Jun 8, 2026SaveLearn
Conceptual and Geometric Foundations for a Teleparallel Approach to Quantum GravityWe revisit quantum field theory in curved spacetime (QFTCS) as a semi-classical framework for quantum matter on classical geometries, emphasizing its limitations, including vacuum ambiguity and…Alexandre Landry·Jun 8, 2026SaveLearn