⚛️ Category

gr-qc

4035 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

Cosmic strings, domain walls and environment-dependent clustering

This paper introduces "norns," a new relativistic simulation code to study environment-dependent clustering in phantom-crossing dark energy models, revealing that non-minimally coupled scalar fields driving late-time phase transitions can generate cosmic strings that suppress structure growth in voids while enhancing it in overdense regions, leaving distinctive signatures in the matter distribution detectable in low-redshift data.

Øyvind Christiansen, Julian Adamek, Martin Kunz2026-01-22
⚛️ general relativity

Time-domain phenomenological multipolar waveforms for aligned-spin binary black holes in elliptical orbits

The paper introduces IMRPhenomTEHM, a new time-domain phenomenological waveform model for aligned-spin binary black holes in elliptical orbits that integrates eccentric post-Newtonian dynamics up to 3PN, achieves high accuracy against numerical relativity simulations without direct calibration, and is validated for use in upcoming gravitational-wave observing runs.

Maria de Lluc Planas, Antoni Ramos-Buades, Cecilio García-Quirós, Héctor Estellés, Sascha Husa, Maria Haney2026-01-15
⚛️ general relativity

Eccentric or circular? A reanalysis of binary black hole gravitational wave events for orbital eccentricity signatures

This paper reanalyzes 17 gravitational-wave events using a new eccentric waveform model (IMRPhenomTEHM) to demonstrate that two specific events show evidence for orbital eccentricity, while others exhibit potential eccentric features, thereby highlighting the necessity of incorporating eccentric models to avoid biases in parameter estimation and better understand binary black hole formation channels.

Maria de Lluc Planas, Antoni Ramos-Buades, Cecilio García-Quirós, Héctor Estellés, Sascha Husa, Maria Haney2026-01-15
⚛️ high-energy theory

Bipartite and tripartite entanglement in pure dephasing relativistic spin-boson model

This paper nonperturbatively analyzes entanglement generation in a relativistic spin-boson model, revealing that significant bipartite entanglement requires deep light-cone interactions and can be enhanced by field mass, while genuine tripartite entanglement is difficult to classify, suggesting a need for alternative probing techniques for multipartite relativistic quantum fields.

Kensuke Gallock-Yoshimura, Erickson Tjoa2026-01-15
⚛️ general relativity

Identification and characterization of distorted gravitational waves by lensing using deep learning

This paper introduces DINGO-lensing, a deep learning framework that drastically reduces the computational time for identifying and characterizing gravitationally lensed gravitational waves from weeks to seconds while maintaining high accuracy in parameter estimation and statistical significance assessment.

Juno C. L. Chan, Lorena Magaña Zertuche, Jose María Ezquiaga, Rico K. L. Lo, Luka Vujeva, Joey Bowman2026-01-15
⚛️ general relativity

Relativistic jets from millisecond proto-magnetars

This study uses 3D general-relativistic magnetohydrodynamic simulations to demonstrate that rapidly rotating millisecond proto-magnetars can launch ultra-relativistic jets within seconds of formation, as centrifugal forces create a dense equatorial wind that confines and collimates high-latitude outflows into structured bipolar jets capable of powering gamma-ray bursts.

Dhruv K. Desai, Luciano Combi, Daniel M. Siegel, Brian D. Metzger2026-01-15
⚛️ general relativity

Liouville theory on a horizon: point particle/scalar field duality and Page-like curve

This paper demonstrates that a specific quantum gravity framework establishes a duality between point particles and massive scalar fields, successfully reproduces black hole entropy consistent with effective field theory, and predicts quantum corrections to Hawking radiation that yield a Page-like curve through the direct encoding and leakage of interior information via the horizon.

J-B. Roux2026-01-15
⚛️ general relativity

Probing dynamical embeddings in a five-dimensional spacetime in light of DESI BAO

This paper demonstrates that Nash gravity, a five-dimensional embedding model generating metric perturbations through extrinsic curvature variations, offers a viable alternative to Λ\LambdaCDM by providing a good fit to DESI, Planck, and supernova data while simultaneously alleviating both the H0H_0 and S8S_8 tensions.

Abraão J. S. Capistrano, Emanuelly Silva, Rafael C. Nunes, Orlando Luongo2026-01-15
⚛️ general relativity

The pseudo-complex Friedmann Lemaitre Robertson Walker model and the time dependence of the Hubble constant

This paper presents a pseudocomplex General Relativity (pcGR) version of the FLRW model where dark energy emerges geometrically, yielding a time-dependent Hubble parameter and a non-zero Hubble acceleration that fits recent DESI BAO data and predicts a redshift drift consistent with Λ\LambdaCDM while offering a distinct, testable geometric signature.

L. Maghlaoui, P. O. Hess, F. Weber, C. A. Zen vasconcellos2026-01-15