⚛️ Category

gr-qc

2489 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.

Non-minimal matter sector couplings in Lorentz-violating gravity: Self-consistent traversable wormholes and quasinormal modes

This paper demonstrates that introducing non-minimal couplings between Lorentz-violating fields and a phantom scalar matter sector enables the existence of self-consistent traversable wormholes with additive vacuum expectation values, while also revealing that specific coupling configurations can mask Lorentz-violating effects in scalar perturbations, a finding validated by consistent quasinormal mode spectra computed via multiple numerical methods.

Renan B. Magalhães, Leandro A. Lessa, Rodolfo Casana2026-06-16⚛️ gr-qc

Short-range approximation to Casimir wormholes inspired by scalar and electric fields

This paper investigates static traversable wormholes sustained by a combination of minimally coupled scalar and electric fields with Casimir energy as exotic matter, deriving analytical near-throat solutions for both variable and fixed plate separations that yield well-behaved manifolds with throat sizes scaling proportionally to the supported electric charge.

Remo Garattini, Athanasios G. Tzikas2026-06-16⚛️ gr-qc

Hyperinvariant Spin Network States -- An AdS/CFT Model from First Principles

This paper investigates hyperinvariant tensor networks with local SU(2) symmetry as discrete AdS/CFT models, demonstrating that they realize key holographic principles within Loop Quantum Gravity while establishing no-go theorems that restrict the existence of absolutely maximally entangled states and general holographic codes under such symmetry.

Fynn Otto, Refik Mansuroglu, Norbert Schuch, Otfried Gühne, Hanno Sahlmann2026-06-16⚛️ gr-qc

Effect of Moduli Redefinitions on Fibre Inflation

This paper proposes a novel fibre inflation model within the perturbative large volume scenario that utilizes base modulus redefinitions and various string corrections to achieve inflationary parameters consistent with ACT data while simultaneously incorporating a quintessence sector to explain both early- and late-time cosmic acceleration.

Dibya Chakraborty, Mishaal Hai, Sayeda Tashnuba Jahan, Ahmed Rakin Kamal, Md Shaikot Jahan Shuvo2026-06-16⚛️ gr-qc

Universal geometric framework for black hole phase transitions: from multivaluedness to classification

This paper establishes a universal geometric framework linking the synchronized multivaluedness observed in black hole phase transitions to a three-sheeted covering structure arising from two non-degenerate critical points in the temperature function, thereby providing a rigorous classification scheme and a unified perspective on black hole thermodynamics and dynamics.

Shi-Hao Zhang, Zi-Yuan Li, Jing-Fei Zhang, Xin Zhang2026-06-16🔢 math-ph

The Dark Side of the Moon: Listening to Scalar-Induced Gravitational Waves

This paper investigates how the collapse of large-amplitude primordial curvature perturbations into planetary-mass primordial black holes generates a detectable scalar-induced gravitational wave background in the μ\muHz range, deriving projected constraints on such black hole populations from future Lunar and Satellite Laser Ranging data while considering the electroweak phase transition and recent HSC microlensing observations.

D. Blas, J. W. Foster, Y. Gouttenoire, A. J. Iovino, I. Musco, S. Trifinopoulos, M. Vanvlasselaer2026-06-16⚛️ gr-qc

Semiclassical Gravity Efficiently Solves NP\mathsf{NP}-Complete Problems

The paper argues that if gravity is classical and couples to quantum fields via semiclassical Einstein equations, the resulting non-linear dynamics could theoretically solve NP\mathsf{NP}-complete problems in polynomial time, thereby violating the Physical Extended Church-Turing Thesis and serving as evidence for the necessity of quantizing gravity.

Matthew Fox, Chaitanya Karamchedu, Sotirios Mygdalas2026-06-16⚛️ gr-qc

Perturbative and Non-Perturbative Contributions to Black Hole Thermodynamics with String Clouds and Dark Matter Backgrounds

This paper investigates how perturbative logarithmic and non-perturbative exponential quantum corrections modify the thermodynamic properties, stability, and phase structure of black holes immersed in a perfect fluid dark matter background with a cloud of strings in anti-de Sitter spacetime, revealing that while non-perturbative effects are significant only near the Planck scale, neither correction type yields a van der Waals-like critical point.

Kumar Sambhav Upadhyay, Sudhaker Upadhyay, Bhabani Prasad Mandal2026-06-16⚛️ gr-qc