⚛️ Category

gr-qc

3285 papers

Quantum gravity represents the frontier where the very large meets the very small, attempting to unify Einstein's theory of gravity with the strange rules of quantum mechanics. This field explores the fundamental fabric of spacetime, seeking to understand how the universe behaves at its most extreme scales, from the heart of black holes to the moment of the Big Bang. Because these concepts often involve complex mathematics, they can feel distant to non-specialists, yet they hold the key to a complete picture of physical reality.

At Gist.Science, we bridge this gap by processing every new preprint in this category directly from arXiv. Our team provides both plain-language explanations and detailed technical summaries for each paper, ensuring that groundbreaking research is accessible to everyone, from curious students to seasoned researchers. Below are the latest papers in quantum gravity, offering fresh insights into the nature of our cosmos.

Particles with precessing spin in Kerr spacetime: analytic solutions for eccentric orbits and homoclinic motion near the equatorial plane

This paper presents a family of analytic solutions for the nearly-equatorial motion of a spinning test particle in Kerr spacetime, deriving closed-form expressions for both eccentric and homoclinic orbits that match numerical simulations and introduce a novel "fixed eccentricity spin gauge" to resolve singularities at the separatrix for modeling extreme mass-ratio inspirals.

Gabriel Andres Piovano2026-03-23⚛️ gr-qc

Geometric unification of timelike orbital chaos and phase transitions in black holes

This paper establishes a geometric unification between timelike orbital chaos and black hole phase transitions by introducing the massive particle surface framework and a new geometric quantity G\mathcal{G}, which demonstrates a precise correspondence with the Lyapunov exponent and reveals synchronized multivalued behavior near first-order phase transitions.

Shi-Hao Zhang, Zi-Yuan Li, Jing-Fei Zhang, Xin Zhang2026-03-23⚛️ gr-qc

Full spectrum of Love numbers of Reissner-Nordstrom black hole in D-dimensions

This paper presents a comprehensive analysis of tidal Love numbers for Reissner-Nordström black holes in DD dimensions, confirming their vanishing in four dimensions and revealing that while tensor and vector modes match known results, previously unknown scalar-type Love numbers vanish for integer multipolar indices but exhibit logarithmic running behavior for half-integer indices.

Minghao Xia, Liang Ma, Yi Pang, H. Lu2026-03-23⚛️ hep-th

Self-consistent neutron stars in a class of massive vector-tensor gravity

This paper resolves the inconsistency in constructing self-consistent neutron star solutions within Einstein-bumblebee gravity by demonstrating that the global vanishing-potential assumption can be abandoned, as the potential is dynamically restored in the weak-field regime while remaining non-zero only in the strong-field interior, thereby extending the theory's viability to compact stars without compromising its black hole solutions or observational constraints.

Zhe Luo, Shoulong Li, Hongwei Yu2026-03-23⚛️ gr-qc

Modified Teleparallel f(T)f(T) Gravity, DESI BAO and the H0H_0 Tension

This paper investigates three late-time f(T)f(T) gravity models using DESI BAO and other cosmological data to determine if torsional modifications can alleviate the H0H_0 tension, finding that while phantom-like regimes can partially shift the Hubble constant toward local measurements, none of the models are statistically preferred over the standard Λ\LambdaCDM model.

Mariam Bouhmadi-López, Carlos G. Boiza, Maria Petronikolou, Emmanuel N. Saridakis2026-03-23⚛️ gr-qc

Operational measurement of relativistic equilibrium from stochastic fields alone

This paper proposes and validates via Monte Carlo simulations a novel protocol that directly reconstructs the relativistic inverse-temperature four-vector from electromagnetic fluctuation correlations in a drifting medium, offering the first experimental method to resolve the century-old controversy regarding the transformation properties of relativistic thermal states without relying on external probes or absolute calibration.

Ira Wolfson2026-03-23⚛️ gr-qc

Recursive Penrose processes in electrically charged black hole spacetimes: Backreaction and energy extraction

This paper demonstrates that in Reissner-Nordström-AdS spacetimes, a recursive Penrose process involving charged particle decays and natural confinement yields a finite energy extraction while the black hole's backreaction ensures the process terminates before violating cosmic censorship or triggering a black hole bomb.

Duarte Feiteira, José P. S. Lemos, Oleg B. Zaslavskii2026-03-23⚛️ gr-qc

Cosmology and modified GW propagation from the BNS mass function at third-generation detector networks

This paper presents conservative forecasts demonstrating that third-generation gravitational-wave detector networks, particularly when combining the Einstein Telescope with Cosmic Explorer, can achieve percent-level precision in constraining the Hubble constant and modified gravitational-wave propagation parameters by leveraging the binary neutron star mass function through joint cosmology-population Bayesian inference.

Dounia Nanadoumgar-Lacroze, Niccolò Muttoni, Michele Maggiore, Michele Mancarella2026-03-23⚛️ gr-qc