⚛️ Category

gr-qc

3805 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.

⚛️ general relativity

Quantum-Corrected Thermodynamics and Phase Structure of AdS Euler-Heisenberg Black Hole

This paper investigates the thermodynamic properties of an AdS Euler-Heisenberg black hole within the Einstein-Euler-Heisenberg framework, demonstrating that incorporating quantum thermal fluctuations via logarithmic and inverse-area entropy corrections fundamentally restructures the phase space, induces second-order phase transitions, and reveals a quantum-stabilized microscopic phase followed by macroscopic instability.

Siddhartha Sankar Borah, Dhruba Jyoti Gogoi, Kalyan Bhuyan2026-08-14
⚛️ general relativity

Quadratic effective energy--momentum tensor on uniform-density hypersurfaces during slow-roll inflation

This paper investigates the quadratic-order effective energy-momentum tensor of scalar cosmological perturbations during slow-roll inflation on uniform-density hypersurfaces, systematically evaluating its behavior across different wavelength regimes and comparing it with other gauges to reveal a structured gauge dependence where uniform-density and comoving slicings coincide for adiabatic super-Hubble modes while others exhibit distinct slow-roll or gradient-dominated behaviors.

Inyong Cho2026-08-14
⚛️ general relativity

Vector Perturbations in Ghost-Free Quasidilaton Massive Gravity

This paper demonstrates that in ghost-free extended quasidilaton massive gravity without a quasidilaton kinetic term, the addition of minimal matter (such as scalar, Maxwell, or Proca fields) fails to resolve the vanishing kinetic coefficient of transverse vector perturbations on the self-accelerating branch, leaving them infinitely strongly coupled and perturbatively unhealthy.

Ekapob Kulchoakrungsun, Daris Samart2026-08-14
⚛️ general relativity

Locally Rotationally Symmetric Spacetimes in Einstein-Cartan Theory and Their Classification

This paper derives the covariant equations for locally rotationally symmetric spacetimes with torsion sourced by a Weyssenhoff fluid in Einstein-Cartan-Sciama-Kibble gravity, establishing a classification scheme for these spacetimes and presenting novel analytical solutions that elucidate the relationship between conformal structure and torsion.

Ujjwal Agarwal, Sante Carloni2026-08-13
⚛️ general relativity

Radiation properties and images of loop quantum Reissner-Nordström black hole with a thin accretion disk

This paper investigates the radiation properties and observational appearance of a thin accretion disk around a loop quantum Reissner-Nordström black hole, revealing that while the black hole's charge must be negligible to support an accretion disk, the electromagnetic coupling significantly influences particle motion and radiative fluxes, whereas the quantum parameter's effect is generally small and dependent on the force's nature.

Qian Li, Jia-Hui Huang2026-08-13
⚛️ general relativity

A Dynamical-Photometric Phase Space for Spiral Galaxies: Probing the Local Coupling Between Light and Gravity

This paper introduces a dynamical-photometric phase space linking local angular frequency and surface brightness gradients to characterize the transition from baryon-dominated to dark-matter-dominated regions in spiral galaxies, demonstrating a robust sigmoid relationship with a median R2R^2 of 0.930 across 136 galaxies from the SPARC database.

Aritra Sanyal, Farook Rahaman2026-08-13
🔭 astrophysics

Full-Covariance Bayesian Inference of Stochastic Gravitational Wave Background with Time-Domain Simulations for Taiji-like Missions

This paper presents a Bayesian spectral inference framework for Taiji-like missions that integrates second-generation time-domain simulations with frequency-domain likelihoods to accurately model full-covariance effects in unequal-arm, time-evolving configurations, demonstrating consistent parameter estimation for stochastic gravitational-wave backgrounds and phase-transition signals.

Qingyuan Liang, Ju Chen, Minghui Du, Huai-Ke Guo2026-08-13
⚛️ high-energy theory

On-Shell Amplitudes and Black-Hole Perturbations: Exact Reissner-Nordström Mixing

This paper demonstrates that flat-space on-shell amplitudes can exactly determine the channel-basis mixing projectors for electromagnetic and gravitational perturbations of a Reissner-Nordström black hole, while also revealing that these alignments are spoiled by finite-mass recoil effects and require spin-induced angular-mode mixing in rotating generalizations.

Kento Takahara, Teppei Kitahara2026-08-13