Gravitation & Nuclear · Physics & Astronomy
General Relativity & Quantum Cosmology
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130 papers, from 10 September 2026 to 5 November 2026: 130 arXiv preprints.
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Newest papers, page 6
Relaxation of a Vlasov gas to an inhomogeneous state due to phase space mixing in an axisymmetric potential: A Newtonian analogy of the Kerr orbital motion
We explore the dynamics of a Vlasov gas propagating in an external axisymmetric potential consisting of a central potential with an additional quadrupolar component which gives rise to two potential…Complexity study of the Hartle-Hawking state in JT gravity
The Wigner function, in general, takes on negative values, and the amount of negativity in the Wigner function gives an operationally meaningful measure of the complexity of simulating the quantum…Vacuum entanglement in a time-dependent electric field
We analyze the correlations of the vacuum state of a charged scalar field by constructing localized observables in two disjoint regions.Relative entropy of entanglement and tripartite minimal surface
We propose a holographic dual of the relative entropy of entanglement for a boundary tripartition $A:B:C$.MADGRAV: a multilevel anomaly-detection pipeline for gravitational-wave searches applied to LIGO data
We present the results of \textbf{MADGRAV}, a deep-learning-based search for high-mass compact binary coalescences, applied to the data collected by the LIGO interferometers during the third…Algebraic structure in holographic tensor networks
In a previous work 2511.21852, we explored the hypothesis that in general theories of quantum gravity, spacetime regions known as generalized entanglement wedges (introduced by Bousso and Penington)…Causal Trade-Offs in Superluminal Extensions of Relativity. A no-go theorem
Extensions of relativity that include superluminal reference frames have recently been proposed by Dragan and Ekert as a way to reconcile relativistic symmetry with quantum uncertainty.Population search for dark matter spikes in megamaser rotation curves
A black hole growing adiabatically inside a dark matter halo is expected to develop a dense spike, with a power-law slope between 1.5 and 2.5, depending on redshift and baryonic activity.Constructing and Probing Three-Boundary Booklet Geometries
Partially entangled thermal states (PETS) provide semiclassical families of black-hole microstates prepared through heavy shell insertions.The Irreversible Depletion of Dark Matter Spikes by Extreme-Mass-Ratio Inspirals
Dense dark matter spikes around massive black holes (MBHs) have been widely predicted to produce gravitational-wave dephasing in extreme-mass-ratio inspirals (EMRIs) that are potentially observable…A technological capability scale for civilizations from the Kardashev and Barrow scales
We introduce a technological capability scale that ranks civilizations by the control operations they can perform per second.From Density to Mass: A New Parametrized Framework for Dark Matter Environment Around Black Holes
Astrophysical black holes (BHs) are not isolated vacuum objects but are expected to reside within complex environments, such as dark matter (DM) halos and baryonic distributions.Low Frequency Gravitational Wave Detection with Gravito-Magnetism
The detection of gravitational waves in the low-frequency band (10 nHz to 1 micro-Hz) using inner solar system proof masses is severely limited by Newtonian gravity gradient noise (GGN) sourced by…Bayesian Evidence for Inspiraling Hotspot Motion in the Galactic Center
During flaring episodes, polarimetric observations of the Galactic Center black hole Sagittarius A* (Sgr A*) reveal evolving, loop-like trajectories in the Stokes Q-U plane, the so-called Q-$U loops.Nash Equilibrium from Quantum-Field Entanglement
Entanglement harvesting transfers quantum field correlations to localized probes, yet whether these correlations can alter stable strategic behavior has remained unclear.Local Many Worlds in Spacetime: Deutsch-Hayden Descriptors and Local Wavefunctions
Bell's theorem establishes that a local and spatially separable physical theory with no superdeterminism or retrocausality must be a theory of many local worlds.Quantum undular bores, rainbows, and event horizons in superfluid dam breaks
The sudden removal of a potential barrier from a Bose-Einstein condensate (BEC) gives rise to a quantum version of a hydrodynamic dam break and leads to rich wave dynamics that have similarities to…Identifiability Limits of Gravitational Wave Phase Deviations: Multiclass Classification with a Multihead Neural Network
We study how well gravitational-wave phase deviations can be identified using a neural network with classification and regression heads.Environmental Imprints of Dark Matter and Accretion Disks on Eccentric EMRIs around Kerr Black Holes
Extreme-mass-ratio inspirals (EMRIs), systems in which a stellar-mass compact object spirals into a supermassive black hole ($M_1$), are prime targets for the space-based gravitational-wave…Analytic detector responses and entanglement in constant-curvature spacetimes
We derive analytic response functions for Unruh--DeWitt detectors coupled to real, massless, conformally coupled scalar fields, to distinguish the effects of the field spectrum and global geometry…