⚛️ Category

gr-qc

4428 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

Self-gravitating Schrödinger--Poisson Solitons in Curved Spacetime

This paper formulates a framework for describing self-gravitating Schrödinger–Poisson solitons in curved spacetime by incorporating tidal effects into the soliton's equations, applies this to solitons orbiting a Kerr black hole to calculate their induced quadrupole deformations and gravitational wave signatures, and identifies parameter regimes where these signals could be detected by future space-based gravitational-wave observatories.

Kei-ichi Maeda2026-10-28
⚛️ general relativity

Primordial black holes from a type-IIB/F theory inflaton potential

This paper proposes a type-IIB/F string theory inflation model featuring a localized Gaussian bump that induces an ultra-slow-roll phase, significantly enhancing the curvature power spectrum to generate primordial black holes with a mass of 10−6M⊙10^{-6}M_\odot and potentially detectable scalar-induced gravitational waves within the SKA sensitivity range.

Chitrak Sarkar, Amitava Choudhuri, Buddhadeb Ghosh2026-10-28
⚛️ general relativity

Improved constraints on higher-derivative effective field theory extensions of general relativity with GW230627_015337

This paper utilizes the gravitational wave event GW230627_015337 within a flexible framework incorporating higher-order modes to place the tightest current constraints on three specific higher-derivative effective field theory extensions of general relativity, finding results consistent with standard GR and setting upper limits on characteristic length scales at the 10–20 km level.

Tao Zhu2026-10-28
⚛️ nuclear experiments

Probing the inner disk edge of rotating neutron stars with dipole excitations in finite nuclei

This paper demonstrates that constraining the nuclear symmetry energy using electric dipole polarizability measurements from finite nuclei significantly reduces uncertainties in the mass, radius, and orbital properties of the innermost stable circular orbit around rapidly rotating neutron stars, thereby enabling more precise independent mass estimates through kilohertz quasi-periodic oscillations.

P. S. Koliogiannis, N. Paar2026-10-28
⚛️ general relativity

Testing Conformal Weyl Gravity with Plasma Modified Black Hole Shadows and EHT Constraints

This paper investigates the shadows of charged rotating de Sitter black holes in conformal Weyl gravity immersed in plasma, demonstrating that while plasma effects reduce shadow sizes similarly to general relativity, the distinct response to electric charge in conformal gravity offers a potential observational method to distinguish the theory from environmental propagation effects using EHT data.

Zhichen Guan, Connor McMillin, Owen Gartlan, William Horner, Leo Rodriguez, Shanshan Rodriguez2026-10-28
⚛️ general relativity

The Symbiosis of Vainshtein and Chameleon Screening

This paper presents the first study of coexisting Vainshtein and Chameleon screening mechanisms in cosmic structures, revealing that their interplay resolves the Galileon void pathology, suppresses Vainshtein radii around massive sources, and shrinks Chameleon screened cores, thereby reshaping observable signatures for cosmological gravity tests.

Sergi Sirera, Tessa Baker, Clare Burrage, James Hallam, Krishna Naidoo2026-10-28
⚛️ phenomenology

Can inflationary axion fluctuations dominate over misalignment?

This paper investigates whether inflationary axion fluctuations can dominate over misalignment in setting the relic abundance of axion dark matter, finding that while a standard scale-invariant spectrum is ruled by isocurvature constraints, a blue-tilted spectrum induced by nonminimal couplings or inflaton-dependent kinetic functions can satisfy observational limits, though such scenarios typically require heavy axion masses or specific kinetic running, and remain ineffective for the standard QCD axion.

Seung J. Lee, Sarunas Verner, Bingrong Yu2026-10-28
⚛️ general relativity

A gaussian-process reconstruction of gravitational-wave friction from dark standard sirens

This paper introduces a non-parametric Gaussian process framework to reconstruct anomalous gravitational-wave friction from dark standard sirens, applying it to the GWTC-5.0 catalog to find no evidence for deviations from General Relativity while providing diagnostic tools to distinguish data-driven constraints from prior assumptions.

Michele Mancarella, Viola De Renzis, Alessandro Agapito2026-10-28