On the impossibility of observational confirmation of black holesGeneral relativity has achieved remarkable experimental and observational success. Critically, recent data from the LIGO-Virgo-KAGRA, Event Horizon Telescope, and GRAVITY collaborations are often…Thiago T. Bergamaschi·May 12, 2026SaveLearn
Analytic thin disks and rings in a class of nonasymptotically flat static spacetimesExternal matter distributions can substantially reshape the strong field environment of compact objects, yet this effect is usually neglected in idealized isolated models. In this work, we…Shokoufe Faraji, Ruijing Tang·May 12, 2026SaveLearn
How much dark matter really matters?Strong gravitational lensing is a key probe to trace dark matter. It assumes that mass curves spacetime so that light from a background source is deflected on its way to the observer. If dark matter…Jenny Wagner·May 12, 2026SaveLearn
Helicity-dependent corrections to black-hole shadows from the gravitational spin Hall effectBlack-hole shadows are purely geometric in the leading-order geometric-optics approximation: their boundary is set by null geodesics and carries no information about the polarization of the probing…C. A. S. Almeida·May 12, 2026SaveLearn
Generation of gravitating solutions with Baryonic charge from Einstein-Scalar-Maxwell seedsWe establish, for the first time, an exact correspondence between Einstein-scalar-Maxwell theory and gauged Skyrme-Maxwell-Einstein models in (3+1) dimensions. By constructing the simplest consistent…Fabrizio Canfora, Anibal Neira, Seung Hun Oh·May 12, 2026SaveLearn
Universal Relations with Dynamical TidesObservations of neutron stars and the precise measurement of their macroscopic properties have provided valuable insights into fundamental physics, both by constraining the behavior of nuclear matter…Jayana A. Saes, Abhishek Hegade K. R., Nicolás Yunes·May 12, 2026SaveLearn
Binary Neutron Stars from the Moon: Early Warnings and Precision Science for the Artemis EraBinary neutron star mergers are unique probes of matter at extreme density and standard candles of cosmic expansion. The only such event observed in both gravitational waves and electromagnetic…Anjali B. Yelikar, Karan Jani·May 12, 2026SaveLearn
Theoretical Detailed Analyses for DC readout and a Fabri-Pérot gravitational-wave detectorThe quantum expectation value and the stationary noise spectral density for a Fabry-P'erot gravitational-wave detector with a DC readout scheme are discussed in detail only through the quantum…Kouji Nakamura·May 12, 2026SaveLearn
A spacetime-covariant approach to inertial and accelerated quantum clocks in first-quantizationIt is expected that a quantum theory of gravity will radically alter our current notion of spacetime geometry. However, contrary to what was commonly assumed for many decades, quantum gravity effects…Eduardo A. B. Oliveira, Andre G. S. Landulfo·May 12, 2026SaveLearn
A Breathing Universe is ConsistentWe consider a toy FRW universe with the exotic topology S1 × S3. We show that for a specific choice of quantum field content, the semi-classical Friedman equations are consistent with…Samuel Blitz·May 12, 2026SaveLearn
Periodic cosmic evolution in Hybrid and Logarithmic Teleparallel GravityIn this work, we investigate a cosmological model within modified teleparallel gravity using two functional forms of f(T): a hybrid model f(T)=eγ TTσ and a logarithmic model, in…F. Mavoa, M. C . Sow, H. Hova C. S. Touré et al.·May 11, 2026SaveLearn
Closing the Cosmographic Hierarchy: Dynamical Attractors from Inflation to ReheatingWe develop a potential-independent cosmographic framework, in which cosmographic parameters are promoted to dynamical variables within a closed autonomous system. Although the cosmographic hierarchy…Seturumane Tema, S. Shajidul Haque, Saurya Das et al.·May 11, 2026SaveLearn
Discovery of Interpretable Surrogates via Agentic AI: Application to Gravitational WavesFast surrogate models for expensive simulations are now essential across the sciences, yet they typically operate as black boxes. We present GWAgent, a large language model (LLM)-based…Tousif Islam, Digvijay Wadekar, Tejaswi Venumadhav et al.·May 11, 2026SaveLearn
End-to-End Population Inference from Gravitational-Wave Strain using TransformersThe population of compact binaries encodes information about their astrophysical origins and the expansion of the universe. Hierarchical Bayesian methods infer these properties by combining…Konstantin Leyde, Stephen R. Green, Maximilian Dax et al.·May 11, 2026SaveLearn
gwBenchmarks: Stress-Testing LLM Agents on High-Precision Gravitational Wave AstronomyModern gravitational wave astronomy relies on modeling tasks that often require months of graduate-level effort, including building fast waveform surrogates from expensive numerical relativity…Tousif Islam, Digvijay Wadekar, Zihan Zhou·May 11, 2026SaveLearn
Metric Reconstruction for Generic Black-Hole PerturbationsStandard (radiation-gauge) metric reconstruction excludes generic sources because it requires a tracefree metric perturbation. We remove this obstruction for perturbations of Petrov type D spacetimes…Dongjun Li, Nicolás Yunes·May 11, 2026SaveLearn
Quantum gravitational deflection of parallel matter wave beamsIt is well known that two parallel photon beams do not deflect under the effect of their energy-momentum tensor. In this work, we propose a novel model where two spatially separated Bose-Einstein…Soham Sen, Vlatko Vedral·May 11, 2026SaveLearn
Gravitational Waves in High Energy Fixed-Target CollisionsThe gravitational field of two-body system, a high energetic particle and a massive particle at rest, is studied in the linearized Einstein gravity. The ultrarelativistic particle yields a…D. V. Fursaev, V. A. Tainov·May 11, 2026SaveLearn
BB plot: A Tool for Accurate Model Selection Using Bayes factorsA common task in physics and astronomy is studying which of the competing hypotheses the data prefer. This is usually done by computing the Bayes factor between the two hypotheses, and either…Ankur Barsode·May 11, 2026SaveLearn
Boson Stars Hosting Black HolesWe study a self-gravitating ultralight dark matter condensate (a boson star) hosting a central black hole, in the nonrelativistic limit, which we refer to as a boson star black hole (BS-BH) system.…Amitayus Banik, Jeong Han Kim, Xing-Yu Yang·May 11, 2026SaveLearn
Orbital dynamics and precession in magnetized Kerr spacetimeWe study the orbital structure and precession dynamics of neutral test particles in the magnetized Kerr black hole (MKBH) spacetime-an exact electrovacuum solution of the Einstein-Maxwell equations…Karthik Iyer, Chandrachur Chakraborty·May 11, 2026SaveLearn
Lectures on the Bondi--Metzner--Sachs group and related topics in infrared physicsThese are the extended lecture notes for a minicourse presented at the I São Paulo School on Gravitational Physics discussing the Bondi--Metzner--Sachs (BMS) group, the group of symmetries at null…Níckolas de Aguiar Alves·May 11, 2026SaveLearn
Massive Scalar Quasinormal Modes, Greybody Factors, and Absorption Cross Section of a Parity-Symmetric Beyond-Horndeski Black HoleWe study quasinormal modes, greybody factors, and the absorption cross section of a massive scalar field in the asymptotically flat parity-symmetric beyond-Horndeski black-hole background. The scalar…S. V. Bolokhov·May 10, 2026SaveLearn
Gravielectric and gravimagnetic fluxes in nutty black holesWe introduce the gravielectric (GE) and gravimagnetic (GM) fields in stationary spacetime using the Komar two-form and its dual. This opens the way to extend the Komar-Tomimatsu derivation of mass…Dmitri Gal'tsov, Rostom Karsanov·May 10, 2026SaveLearn
Hawking Radiation and Greybody Factors of Test Scalar and Electromagnetic Fields on Asymptotically Flat Pure Lovelock Black HolesPure Lovelock black holes are geometrically more transparent than their Einstein counterparts, but they radiate far less. We compute scalar and higher-dimensional electromagnetic greybody factors and…Jayden Tan·May 10, 2026SaveLearn