gr-qc papers | Gist.Science

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.

Analytic semiclassical backreaction of a Schwarzschild black hole in a finite cavity: horizon shift, temperature renormalization, and canonical stability in the Hartle-Hawking State

This paper presents an analytic model of static semiclassical backreaction for a Schwarzschild black hole in the Hartle-Hawking state within a finite cavity, deriving explicit first-order corrections to the horizon location and Hawking temperature while demonstrating that the near-horizon geometry retains its universal Rindler structure, thereby confirming that semiclassical effects renormalize rather than fundamentally alter the geometric origin of Hawking radiation.

G. G. L. Nashed, Alnadhief H. A. Alfedeel, Tiberiu Harko2026-04-14⚛️ gr-qc

Entropy covector field and macroscopic observables for rotating and non-rotating relativistic kinetic gases around a Schwarzschild black hole

This paper derives the entropy covector field and analyzes macroscopic observables for collisionless relativistic kinetic gases around a Schwarzschild black hole, revealing significant morphological and asymptotic differences between rotating and non-rotating configurations driven by the role of angular momentum.

Carlos Gabarrete, Daniela Montoya, Roger Raudales2026-04-14⚛️ gr-qc

Quantum Entanglement of Circular Strings as a Probe for Topologically Charged Spacetimes

This paper proposes a framework using the squeezed-state quantization of quadratic fluctuations of a circular string probe to demonstrate that the resulting entanglement entropy serves as a sensitive diagnostic tool for distinguishing topologically charged spacetimes, such as global monopoles and monopole wormholes, from their classical geometric descriptions.

Ai-chen Li, Xin-Fei Li, Xuanting Ji2026-04-14⚛️ gr-qc

Holographic inflation and slow-roll inflation within Rényi entropic framework in the light of ACT DR6

This paper analyzes inflationary scenarios within the Rényi holographic dark energy framework and finds that while holographic inflation is ruled out by ACT DR6 data, slow-roll inflation with power-law potentials ( $n=0.2$ and $0.3$) is favored for e-folding numbers between 50 and 55.

Qihong Huang, He Huang, Hao Chen, Qingdong Wu2026-04-14⚛️ gr-qc

Energy-momentum and dark energy in $\boldsymbol{SU(\infty)}$ -QGR quantum gravity

This paper demonstrates that in the $SU(\infty)$ -QGR quantum gravity framework, the fragmentation of the universal Hilbert space generates local symmetries and spin-1 gravitons, leading to an Einstein-like constraint equation and identifying fields associated with inflation and late-time acceleration as order parameters reflecting the evolution of the Universe's quantum states.

Houri Ziaeepour2026-04-14⚛️ gr-qc

Strong gravitational lensing and Quasiperiodic oscillations as a probe for an electrically charged Lorentz symmetry-violating black hole

This study investigates how electric charge and Lorentz symmetry breaking jointly influence strong gravitational lensing and quasiperiodic oscillations around a charged black hole, utilizing observational data from supermassive black holes and microquasars to establish constraints on the Lorentz symmetry-violating parameter while revealing a compensatory effect between charge and symmetry breaking.

Sohan Kumar Jha2026-04-14⚛️ gr-qc

The Junction Law for Multipartite Entanglement in Confining Holographic Backgrounds

This paper investigates the realization of the junction law for multipartite entanglement in confining holographic backgrounds using genuine multi-entropy, demonstrating that while the junction picture persists across both hard-wall and smooth geometries, the specific phase structures and short-distance scaling behaviors are highly dependent on the background details.

Norihiro Iizuka, Akihiro Miyata2026-04-14⚛️ gr-qc

Post-Newtonian dynamics of charged compact binaries

This paper investigates the dissipative dynamics of charged compact binaries within Einstein-Maxwell theory by computing next-to-leading order gravitational and electromagnetic radiation fluxes to derive orbital frequency evolution and analyze the stability of circular orbits under varying charge-to-mass ratios.

Zi-Han Zhang, Tan Liu, Shuai Zhang, Zong-Kuan Guo2026-04-14⚛️ gr-qc

Reionization Topology as a Probe of Self-Interacting Dark Matter

This paper proposes that dark matter self-interactions alter the large-scale topology of cosmic reionization by reducing gas binding energy in high-redshift halos, thereby creating more numerous and uniformly distributed ionized bubbles with distinct 21 cm power spectrum signatures that are potentially detectable by SKA1-Low.

Zihan Wang2026-04-14⚛️ gr-qc

Exact holographic thermal spectral functions: OPE, non-perturbative corrections, and black hole singularity

This paper demonstrates that the exact thermal spectral functions of even-dimensional holographic CFTs factorize into perturbative and non-perturbative components, utilizing exact WKB techniques to derive a full transseries expansion that explicitly links the non-perturbative sector to the imprints of the black hole singularity in complex time correlators.

Hewei Frederic Jia, Mukund Rangamani2026-04-14⚛️ gr-qc

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