⚛️ Category

gr-qc

3735 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

Cosmological Evolution of Primordial Black Holes: UV/IR Decoupling and the KM3NeT 220 PeV Neutrino Anomaly

This paper proposes that the 220 PeV neutrino event detected by KM3NeT originates from the terminal evaporation of a Primordial Black Hole, demonstrating that embedding the black hole in a cosmological McVittie spacetime reconciles early-universe accretion dynamics with today's standard Schwarzschild thermodynamics to explain the observed high-energy flux while satisfying isotropic background constraints.

Debdatta Dey (IIT Bombay), Tausif Parvez (IIT Bombay), S. Shankaranarayanan (IIT Bombay)2026-09-11
⚛️ general relativity

Signatures of charged rotating regular black holes: quasinormal modes, grey-body factors and shadows

This paper constructs rotating counterparts of the Ayón–Beato–García and Balart–Panotopoulos–Rincón regular black holes to analyze their astrophysical signatures, finding that while the rotating BPR model closely mimics the Kerr–Newman black hole, the rotating ABG geometry exhibits distinct quasinormal modes, grey-body factors, and shadow profiles that could be distinguished using gravitational wave and Event Horizon Telescope observations.

Abhisek Barman Maji (Indian Institute of Technology Kharagpur, India)2026-09-11
⚛️ general relativity

From the Test-Mass Limit to Binary Black-Hole Waveforms in Higher-Derivative Gravity

This paper develops a method to construct comparable-mass binary black hole waveforms in higher-derivative gravity by embedding test-mass perturbation results into an effective-one-body model, demonstrating that tidal responses are essential for consistent leading-order predictions and enabling waveform modeling in the absence of full numerical relativity simulations.

Chaoyi Yang, Neev Khera, Dongjun Li, Huan Yang2026-09-11
⚛️ general relativity

Theoretical Aspects of Direct Waves in Kerr Black Holes: Pole-Splitting Method for Ringdown Analysis

This paper theoretically formulates direct waves in extreme-mass-ratio mergers as source-driven signals reflecting orbital motion and ergoregion effects, introducing a pole-splitting method to separate these waves from quasinormal modes and demonstrating that the resulting non-pole sector serves as a probe of black hole frame dragging and redshift.

Nao Nakamoto, Naritaka Oshita, Hiroki Takeda2026-09-11
🔭 astrophysics

Gravitational Wave Eigenfrequencies from Neutrino-Driven Core-Collapse Supernovae

By analyzing over 1000 self-consistent core-collapse supernova models, this study identifies two characteristic gravitational-wave frequencies that constrain the neutron star's surface gravity and nuclear equation of state, while demonstrating that specific modeling details significantly influence the evolution of these eigenfrequencies.

Noah E. Wolfe, Carla Frohlich, Jonah M. Miller, Alejandro Torres-Forne, Pablo Cerda-Duran2026-09-10
🔭 astrophysics

Too small to fail: characterizing sub-solar mass black hole mergers with gravitational waves

This study demonstrates that while current LIGO/Virgo detectors can confidently identify and localize sub-solar mass black hole mergers at the threshold of detectability, next-generation observatories like Cosmic Explorer and the Einstein Telescope will be required to precisely characterize their properties and distinguish them from other exotic objects.

Noah E. Wolfe, Salvatore Vitale, Colm Talbot2026-09-10
⚛️ general relativity

Gravitational wave memory and geodesic congruence response in generalised Ellis-Bronnikov wormholes

This paper investigates gravitational wave memory in generalised Ellis-Bronnikov wormholes by analyzing the response of timelike geodesics and congruences to localized pulses, revealing that the resulting displacement, velocity, expansion, and shear signatures depend systematically on the wormhole's throat radius, steepness parameter, and the pulse's location relative to the throat.

Soumya Bhattacharya, Suman Ghosh2026-09-10