⚛️ Category

gr-qc

3894 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.

🔬 atomic physics

Decoherence of spatial superpositions along stationary worldlines

This paper derives a quantum Brownian motion master equation describing the decoherence of a particle's spatial superposition along stationary worldlines in the Minkowski vacuum, identifying two thermal-like contributions arising from the modified field spectrum observed by the particle and differential time dilation across its wavefunction, with specific rates evaluated for hyperbolic and uniform circular motion.

Clemens Jakubec, Aaron Bartleson, Peter W. Milonni, Kanu Sinha2026-05-14
⚛️ general relativity

Cosmological perturbations in the theory of gravity with non-minimal derivative coupling. I. Modes of perturbations

This paper investigates scalar, vector, and tensor cosmological perturbations in a gravity theory with non-minimal derivative coupling, demonstrating that all modes are amplified during the early quasi-de Sitter inflationary stage—a behavior distinct from standard Friedmann cosmology—while the coupling naturally vanishes at late times to restore standard evolution.

R. I. Kamalitdinov, S. V. Sushkov2026-05-14
⚛️ high-energy experiments

Inpainting over the cracks: challenges of applying pre-merger searches for massive black hole binaries to realistic LISA datasets

This paper demonstrates that both zero-latency filtering and a novel "inpainting" technique can successfully identify massive black hole binary mergers in realistic LISA datasets, even in the presence of data gaps and overlapping signals, thereby enabling critical pre-merger sky localization for multi-messenger observations.

Gareth Cabourn Davies, Ian Harry2026-05-14
🔭 astrophysics

Gravitational lens on a static optical constant-curvature background: Its application to Weyl gravity model

This paper extends the optical metric method for gravitational lensing to a static optical constant-curvature (SOCC) background, demonstrating that the exact lens equation retains a unified trigonometric form and successfully resolves the divergence of the light deflection angle in the zero-mass limit of Weyl gravity's Mannheim-Kazanas solution by properly incorporating long-distance curvature effects.

Keita Takizawa, Hideki Asada2026-05-13
⚛️ general relativity

Tests of General Relativity with GW230529: a neutron star merging with a lower mass-gap compact object

This paper presents a comprehensive test of General Relativity using the gravitational wave signal GW230529_181500 from a neutron star merging with a lower mass-gap compact object, confirming the theory's validity while establishing the most stringent constraints to date on dipole radiation and the Gauss-Bonnet coupling in Einstein-scalar-Gauss-Bonnet gravity.

Elise M. Sänger, Soumen Roy, Michalis Agathos, Ofek Birnholtz, Alessandra Buonanno, Tim Dietrich, Maria Haney, Félix-Lou (…)2026-05-13
⚛️ high-energy theory

Non-interacting holographic dark energy with Torsion via Hubble Radius

This paper demonstrates that incorporating a time-dependent torsion scalar into a non-interacting holographic dark energy model with the Hubble radius as an infrared cut-off successfully drives cosmic acceleration and yields an equation of state distinct from the cosmological constant, thereby resolving limitations found in earlier interacting models.

Yongjun Yun, Jungjai Lee2026-05-13✓ Author reviewed ⓘ
⚛️ general relativity

Biased parameter inference of eccentric, spin-precessing binary black holes

This study demonstrates that analyzing gravitational wave signals from eccentric, spin-precessing binary black holes using quasi-circular waveform models leads to significant biases in inferred source parameters, thereby highlighting the critical need for comprehensive waveform models that simultaneously account for both eccentricity and spin precession.

Divyajyoti, Isobel M. Romero-Shaw, Vaishak Prasad, Kaushik Paul, Chandra Kant Mishra, Prayush Kumar, Akash Maurya, Micha (…)2026-05-13
⚛️ general relativity

APRIL: Auxiliary Physically-Redundant Information in Loss -- A physics-informed framework for parameter estimation with a gravitational-wave case study

This paper introduces APRIL, a framework that augments supervised loss with auxiliary physically-redundant terms to improve convergence and accuracy in parameter estimation for large multi-system datasets, demonstrating up to an order-of-magnitude performance gain in gravitational wave parameter estimation compared to standard approaches.

Matteo Scialpi, Francesco Di Clemente, Leigh Smith, Michał Bejger2026-05-13
⚛️ high-energy theory

Magnetized dynamical black holes

This paper presents a novel exact solution to the Einstein-scalar-Maxwell equations describing a dynamical black hole immersed in a time-dependent electromagnetic field, which generalizes the Fisher-Janis-Newman-Winicour solution within the Fonarev framework and demonstrates how time dependence can cloak curvature singularities that would otherwise be naked in stationary limits.

Jibril Ben Achour, Adolfo Cisterna, Amaro Díaz, Keanu Müller2026-05-13