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.

⚛️ general relativity

Defrosting the Born-Infeld dyonic frozen star with tachyon matter: spectrum of oscillations

This paper simplifies the derivation of the oscillation spectrum for a "defrosted" Born-Infeld dyonic frozen star by using the underlying Lagrangian instead of fluid approximations, thereby confirming that sound velocities scale linearly with the defrosting parameter $\gamma$ while lifetimes scale as $1/\gamma^2$ , and ensuring the consistency of perturbation equations for arbitrary non-spherical deviations.

Ram Brustein, A. J. M. Medved, Tamar Simhon2026-07-22

⚛️ general relativity

Quasinormal Ringdown and Echoes in Accreting Exotic Compact Objects

By modeling scalar perturbations on a dynamical Vaidya background, this study demonstrates that gravitational-wave echoes from accreting exotic compact objects are progressively compressed and suppressed until they vanish upon horizon formation, leaving a standard black hole ringdown signature.

Chanchal Sharma, Kabir Chakravarti, Sudipta Sarkar2026-07-22

⚛️ general relativity

Gravity-Induced Entanglement of Quantum Clocks as a Signature of Genuinely Quantum Local Position Invariance

This paper proposes that gravity-induced entanglement of quantum clocks serves as a novel framework to characterize and test local position invariance in the quantum regime, distinguishing between genuinely quantum and classical-like violations of this fundamental principle of general relativity.

Eyuri Wakakuwa2026-07-22

⚛️ general relativity

A wormhole with two black holes

The paper presents a stationary four-dimensional vacuum solution to Einstein's equations describing a Lorentzian wormhole containing two antipodal, co-rotating black holes suspended by semi-infinite cosmic strings, which also features a naked ring singularity for most parameter values.

Gérard Clément2026-07-22

⚛️ general relativity

Plasma-Induced Modifications of the Shadows of Rotating Bardeen Black Holes with Perfect Fluid Dark Matter

This paper investigates how plasma distributions and perfect fluid dark matter modify the optical shadows of rotating Bardeen black holes, demonstrating that Event Horizon Telescope observations can constrain both the surrounding medium and the intrinsic properties of these regular black holes.

Gowtham Sidharth M, Sanjit Das2026-07-22

⚛️ general relativity

Calibration of the AdvancedVirgo+ Gravitational Wave Detector and Reconstruction of the Detector Strain h(t) during the Observing Run O4

This paper details the calibration methods, online strain reconstruction, and offline uncertainty estimation for the Advanced Virgo+ detector during the O4 observing run, highlighting its critical role in improving source localization despite limited sensitivity and confirming the data's availability for public scientific analysis.

Virgo Collaboration2026-07-22

⚛️ general relativity

GWTC-5.0: Tests of General Relativity

Using 168 confident gravitational-wave events from the GWTC-5.0 catalog, this study performs seven rigorous tests of general relativity in the strong-field regime and finds no evidence for deviations from the theory, confirming consistency with GR across waveform residuals, polarization modes, post-Newtonian coefficients, and ringdown dynamics.

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration, A. G. Abac, A. Abe, I. Abouelfett (…)2026-07-22

⚛️ general relativity

Optomechanical transfer factors for scattered light noise estimations in the beamtubes of ground-based gravitational wave detectors

This paper presents an improved analytical framework for estimating scattered light noise in ground-based gravitational wave detectors by incorporating full frequency-dependent optomechanical responses, including radiation-pressure coupling and signal-extraction dynamics, which reveals significant deviations from legacy estimates particularly for future detectors like the Einstein Telescope.

M. Andrés-Carcasona2026-07-22

🔢 mathematics

The Finsler spacetime condition for (\alpha,\beta)-metrics and their isometries

This paper establishes the necessary and sufficient conditions for $(\alpha,\beta)$ -metrics to define a Finsler spacetime structure with a Lorentzian signature and fully characterizes the relationship between the isometries of such metrics and their underlying pseudo-Riemannian metrics.

Nicoleta Voicu, Annamária Friedl-Szász, Elena Popovici-Popescu, Christian Pfeifer2026-07-21

⚛️ general relativity

Template-Free Gravitational Wave Detection with CWT-LSTM Autoencoders: A Case Study of Run-Dependent Calibration Effects in LIGO Data

This paper presents a template-free, unsupervised deep learning framework combining Continuous Wavelet Transform and LSTM autoencoders for gravitational wave detection in LIGO data, demonstrating that addressing cross-run calibration-induced batch effects through single-run training significantly boosts performance to achieve 97% precision and 96% recall on O4 data.

Jericho Cain2026-07-21

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