⚛️ Category

gr-qc

3826 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

Black hole solutions with a linear equation of state in Hořava gravity and Einstein--æther theory

This paper presents a procedure for deriving spherically symmetric black hole solutions in Hořava gravity and Einstein--æther theory by specifying linear equations of state rather than energy density profiles, revealing exotic physical and thermodynamic behaviors such as effective electric-potential terms, nn-fold degenerate extremal horizons, and black hole remnants with central singularities.

Milko Estrada2026-07-28
⚛️ high-energy theory

Comments on deformed phase-space cosmology, SUSY and black holes

This paper constructs a supersymmetric deformed model of the Schwarzschild black hole interior by introducing noncommutativity in minisuperspace, derives the resulting deformed SUSY Wheeler-DeWitt equation and classical solutions via WKB approximation, and discusses the implications of these deformations for phase-space cosmology and black hole physics.

O. López-Aguayo, J. C. López-Domínguez, G. E. Pérez-Cuéllar, M. Sabido2026-07-28
⚛️ general relativity

Entropic Chaplygin-Gas cosmology and late-universe tension diagnostics

This paper demonstrates that an entropic generalized Chaplygin-gas cosmology can effectively alleviate the H0H_0 tension by modifying late-time background expansion while leaving the S8S_8 discrepancy largely unaffected, suggesting these cosmological tensions originate from distinct physical sectors.

Kelvis A. Kulhkampa, Carlos H. Coimbra-Araújob, Abraão J. S. Capistrano, Luiz A. Cabral, José A. P. F. Marão2026-07-28
⚛️ general relativity

Universal relations applied to proto-neutron star generated gravitational waves from three-dimensional core collapse supernova simulations

This study evaluates the reliability of universal relations linking proto-neutron star oscillation frequencies to gravitational wave signals using three-dimensional core-collapse supernova simulations, finding that while these relations show promise, significant discrepancies necessitate caution in interpreting gravitational wave detections to infer proto-neutron star properties and highlight the need for further refinement of these models.

R. Daniel Murphy, Anthony Mezzacappa, Colter J. Richardson, Pedro Marronetti, Eric J. Lentz, Ryan E. Landfield2026-07-28
⚛️ high-energy theory

Mass/electric versus NUT/magnetic charges: duality from scattering amplitudes in D≥4D\geq4 and for all bosonic spins

This paper establishes a novel electric-magnetic duality between mass/electric and NUT/magnetic charges for Kerr-NUT metrics and higher-spin fields in dimensions D≥4D \geq 4 by demonstrating that their 3-point scattering amplitudes are generated by spin-raising operators acting on dual scalar seeds characterized by Bessel functions of opposite orders, while finding no evidence for a higher-dimensional analogue of D=4D=4 self-dual gravity integrability.

Ricardo Monteiro, Lecheng Ren, Daniel Siretanu2026-07-28