⚛️ 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

Complexity Growth in Black Holes: A Comparison of the Volume and Action Proposals

This paper investigates the late-time growth of holographic complexity in various black hole spacetimes using both volume and action prescriptions, revealing that while the action proposal yields a universal thermodynamic scaling, the complexity growth rate exhibits non-trivial, process-dependent variations under physical perturbations like the Penrose process and particle accretion that highlight the limitations of equilibrium-based treatments.

Suraj Maurya, Sashideep Gutti, Rahul Nigam, Swastik Bhattacharya2026-06-19
⚛️ general relativity

Testing bosonic dark matter through white dwarf mass measurements

This paper proposes that discrepancies between electromagnetic and gravitational mass measurements of white dwarfs can be explained by the presence of a gravitationally coupled, electromagnetically invisible bosonic scalar field, which constitutes 5–15% of the stellar mass and allows for new constraints on ultralight dark matter particles.

Jorge Castelo Mourelle, Nicolas Sanchis-Gual, José A. Font, Juan Calderón Bustillo2026-06-19
⚛️ general relativity

Photon surfaces extension in general spherical dust collapse

This paper extends the analysis of photon surfaces in spherical dust collapse to the general non-marginally bound Lemaître–Tolman–Bondi model, demonstrating that the exterior photon sphere extends into the cloud as a null hypersurface that reaches the central singularity if and only if the singularity is naked, thereby linking the causal structure of the collapse to potential observational signatures in black-hole shadows.

Roberto Giambò, Camilla Lucamarini2026-06-19
⚛️ general relativity

Covariant Tolman-Oppenheimer-Volkoff equations in Energy-Momentum Squared Gravity

This paper employs the covariant 1+1+2 semi-tetrad formalism to demonstrate that static, spherically symmetric stellar configurations in Energy-Momentum Squared Gravity can be described by standard Tolman-Oppenheimer-Volkoff equations with effective variables, thereby enabling a global dynamical systems analysis of the stellar phase space while revealing distinct matching conditions for self-bound matter compared to General Relativity.

Eduardo Bittencourt, Mariam Campbell, Peter K. S. Dunsby, Sergio E. Jorás2026-06-19