⚛️ Category

gr-qc

3841 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 Constraints on Minimal Cubic Galileon Models in Teleparallel Gravity

This paper uses observational data from supernovae, cosmic chronometers, SH0ES, and baryon acoustic oscillations to constrain minimal cubic Galileon models within teleparallel gravity, finding that while these extended models can accommodate late-time cosmic acceleration with a quadratic potential and fixed parameter b1b_1 outperforming Λ\LambdaCDM in χ2\chi^2, the standard Λ\LambdaCDM model remains favored by the Bayesian Information Criterion due to the extended models' larger parameter spaces.

Akbar Davlataliev, Abdurakhmon Nosirov, Odil Yunusov, Bobomurat Ahmedov, Jackson Levi Said2026-06-19
⚛️ general relativity

NNNN: Neural Networks for Newtonian Noise Mitigation at the Einstein Telescope

This paper demonstrates that neural networks, particularly convolutional and graph-based architectures, can significantly outperform the traditional Wiener filter in predicting and mitigating Newtonian noise for the Einstein Telescope, achieving reduction factors of 10–30 in amplitude spectral density for transient seismic events.

Jan Kelleter, Patrick Schillings, Jonathan Kuckert, David Bertram, Markus Bachlechner, Achim Stahl, Johannes Erdmann2026-06-19
⚛️ general relativity

On the Plebanski Formulation with Energy Momentum

This paper presents a systematic construction for coupling matter to Plebanski's formulation of gravity by lifting the trace-free energy-momentum tensor into the algebraic curvature space to derive chiral source terms, thereby recovering known definitions, verifying energy conservation via the chiral Bianchi identity, and explicitly recovering the Reissner-Nordström-de Sitter solution for a spherically symmetric electromagnetic field.

Jack C. M. Hughes, Joudy F. Jamal Beek, Fedor V. Kusmartsev2026-06-19
⚛️ general relativity

Regular Black Holes from Anisotropic Source with Hydrodynamic Equation of State

This paper investigates spherically symmetric regular black hole solutions sourced by anisotropic matter with a hydrodynamic equation of state, revealing that the pressure profile's behavior leads to hydrodynamic instabilities and subluminal constraints while establishing a universal hierarchy among the locations of strong energy condition violation, pressure roots, and pressure maxima.

Hassan Firouzjahi2026-06-19
⚛️ general relativity

An explicit and differentiable Wilson-Daubechies-Meyer transform for gravitational-wave data analysis

This paper introduces **wdm_transform**, an open-source Python package that provides a mathematically explicit, differentiable, and GPU-accelerated implementation of the Wilson-Daubechies-Meyer time-frequency transform for gravitational-wave data analysis, validated through numerical equivalence with frequency-domain methods and designed to support future optimization for non-stationary noise and complex detector challenges.

Avi Vajpeyi, Giorgio Mentasti, Quentin Baghi, Ollie Burke, Lorenzo Speri2026-06-19
⚛️ general relativity

Constitutive birefringence and critical curves in the rotating García--Díaz black hole

This paper investigates high-frequency electromagnetic propagation in a rotating García--Díaz black hole coupled to nonlinear electrodynamics, demonstrating that the constitutive response induces birefringence that splits the spacetime's null cone into two effective optical metrics, resulting in distinct polarization-dependent critical contours on the observer's celestial sphere.

Ariel Guzmán, Mohsen Fathi, J. R. Villanueva2026-06-19
⚛️ high-energy theory

Macroscopic Black-Hole Remnants in a Nonlocal Field Theory: Towards Hawking Radiation in SFT

This paper demonstrates that in a nonlocal string field theory framework, Hawking radiation from a large black hole is exponentially suppressed and terminates shortly after the scrambling time due to the smearing of trans-Planckian interactions, resulting in a macroscopic remnant that offers a potential resolution to the black hole information paradox.

Feng-Yin Cheng, Pei-Ming Ho, Wei-Hsiang Shao2026-06-19
⚛️ general relativity

Impossibility of superluminal signalling rules out causal loops in conical spacetimes

This paper resolves a key open question by demonstrating that while operationally detectable causal loops are theoretically possible in (1+1)-dimensional Minkowski spacetime without violating the no-superluminal-signalling principle, such loops are strictly ruled out in higher-dimensional conical spacetimes across classical, quantum, and post-quantum theories, thereby establishing that the relationship between no superluminal signalling and the absence of causal loops is inherently dependent on spacetime geometry.

Maarten Grothus, V. Vilasini2026-06-19