Gravitation & Nuclear · Physics & Astronomy
General Relativity & Quantum Cosmology
The newest papers in General Relativity & Quantum Cosmology that ReadSearch has read, newest first. Each links to its own page, with its authors, date, where it was published and the original.
130 papers, from 10 September 2026 to 5 November 2026: 130 arXiv preprints.
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Newest papers, page 5
Semiclassical state on algebra of observables for de Sitter space and time reversal symmetry
In de Sitter static patch holography, coupling bulk quantum fields to an observer's dynamical clock yields a type II$_1$ von Neumann algebra $\mathcal{M}_+$ of gauge-invariant observables.TheoPhysEval: Assessing AI agents at autonomous theoretical physics problem solving
We present a suite of 50 unpublished research-level theoretical physics problems with verifiable answers.Galaxy Clustering Can Reveal Host-Galaxy Properties of Binary Black Hole Mergers
Galaxy clustering encodes information about the host galaxies of binary black hole (BBH) mergers even when individual hosts remain unidentified, because the distribution of neighboring galaxies…A note on decoherence in quantum cosmology by thermal perturbations: an open quantum systems approach
We study, within a toy model, how a thermal bath of cosmological perturbations can decohere the minisuperspace degrees of freedom of the universe, treating the perturbations as an environment in the…Sharing of Gaussian tripartite steering in de-Sitter space
We investigate the redistribution and directional properties of Gaussian tripartite quantum steering in de-Sitter space within the continuous-variable framework.Redundant Records of the Past: Unifying Quantum Darwinism and Decoherent Histories
There exist two different paradigms for records in isolated quantum systems: decoherent histories (which determines which past events leave formal records) and quantum Darwinism (which determines…Spacetime Quasicrystals and Computational Complexity Theory in the Road Towards Quantum Gravity
Part I: Semiclassical Gravity Efficiently Solves $\mathsf{NP}$-Complete Problems Assuming the gravitational field is classical and that it couples to quantum fields via the semiclassical Einstein…Quasi-periodic eruption spectral-timing: EMRIs crossing warped accretion disks
Quasi-periodic eruptions (QPEs) are repeating X-ray transients from galactic nuclei potentially caused by a stellar-mass orbiter repeatedly colliding with the accretion disk of a supermassive black…Reconstruction of Black Hole Islands from Hawking Radiation via the Algebraic Petz Map
The island proposal guarantees a unitary Page curve for evaporating black holes, implying that operators deep behind the horizon must be fully reconstructable from asymptotic Hawking radiation.Spontaneous Hawking Radiation from Dynamical Black-Hole Formation in Quantum Spin Systems
We show that Hawking radiation spontaneously generated by dynamical black-hole formation can be realized in a local quantum spin model.A Graph Attention Network Framework for Simultaneous Prediction of Galaxy and Dark Matter Halo Properties in GAMA DR4
We develop a graph-based deep learning model, GAMANet, to predict galaxy and halo properties using the GAMA DR4 dataset.Horizon-Scale Corrections to Black Hole Geometry from a Conserved Quantum Atmosphere
Black holes are usually described either as classical geometries on which quantum fields propagate or as objects whose complete quantum description lies beyond semiclassical gravity.Relative-Entropy Flow Across the Page Transition
We develop a computational framework for the quantum relative entropy based on the replica trick and apply it to analyze the evaporation process method of Jackiw-Teitelboim black holes.Black Hole Horizon Fluctuations from Unruh Quantum Noise
The mean Hawking flux does not determine how quantum stress fluctuations perturb a black-hole geometry.Probing departures from Schwarzschild geometry with the S301 star and kilometre-baseline interferometry
The S301 star reaches a pericentre one tenth that of S2, opening a new regime for probing black-hole spin and departures from Schwarzschild.White paper: 1-10 Hz matter-wave interferometer to test the spin entanglement witness for quantum gravity
In this white paper, we highlight the importance of the ($1-10~{\rm Hz}$) frequency range for laboratory tests of the quantum nature of gravity using the quantum gravity-induced entanglement of…Optimal Interferometer Geometry for Gravitationally Induced Quantum Entanglement
The quest for a quantum theory of gravity remains a central challenge in modern physics, driven by the goal of unifying general relativity and quantum mechanics.Quantum Error-Corrected Memories Keep Proper Time
What does quantum error correction do to relativistic proper time?Born rule in Schroedinger-Newton scenarios of semiclassical gravity
We investigate dynamical relaxation to the Born rule in a semiclassical gravity model described by the Schrödinger-Newton equations.Stars Would Remember a Recent Gravitational Transition: Testing G-step Resolutions of the Hubble Tension with Red Dwarfs
We test the hypothesis that Newton's gravitational constant underwent a rapid transition approximately $73$-$130\,{\rm Myr}$ ago, as proposed in some resolutions of the Hubble tension.