⚛️ Category

gr-qc

3256 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.

Memory Effects and Entanglement Dynamics of Finite time Acceleration

This paper investigates the memory effects and entanglement dynamics of Unruh-DeWitt detectors undergoing finite-duration uniform acceleration in Minkowski spacetime, revealing that while CP divisibility and Fisher information exhibit memory-dependent behaviors, total correlations and entanglement harvested return smoothly to their initial values after the acceleration phase without measurable impact on negativity or mutual information.

Nitesh K. Dubey, Sanved Kolekar2026-04-02⚛️ gr-qc

Strong gravitational-wave lensing posterior odds

This paper unifies frequentist and Bayesian approaches to identifying strongly lensed gravitational-wave events by deriving posterior odds that demonstrate how selection effects, while influencing the Bayes factor, ultimately cancel out to yield a detection metric insensitive to the total number of events in the catalogue.

Otto A. Hannuksela, K. Haris, Justin Janquart, Harsh Narola, Hemantakumar Phurailatpam, Jolien D. E. Creighton, Chris Van Den Broeck2026-04-02⚛️ gr-qc

Holographic Black Hole Formation and Scrambling in Time-Ordered Correlators

This paper proposes a holographic mechanism where the collision of two shock waves in 3D AdS spacetime, dual to boosted precursor operators in a CFT, leads to black hole formation after two scrambling times, a process diagnosed by the exponential growth of operator dimensions in time-ordered correlators that reveals scrambling characteristics typically associated with out-of-time-order functions.

Pratyusha Chowdhury, Felix M. Haehl, Adrián Sánchez-Garrido, Ying Zhao2026-04-02⚛️ hep-th

Gravitational wave polarization modes and the kinematical tensors in general relativity and beyond

This paper establishes exact and linearized relations between the kinematical tensors (expansion, shear, and vorticity) of freely falling test particles and the various polarization modes of gravitational waves in metric theories of gravity, offering a novel theoretical framework for interpreting these modes and their phenomenology.

Cynthia Maldonado, Francisco Nettel, Pedro A. Sánchez2026-04-02⚛️ gr-qc

Constraining non-minimally coupled squared-Quartic Hilltop Inflation in light of ACT observations

This study demonstrates that non-minimally coupled squared-Quartic Hilltop inflation in both Einstein and Jordan frames successfully reconciles the tension between standard inflationary models and recent DESI-ACT observations by predicting a scalar spectral index and tensor-to-scalar ratio consistent with the new data under both weak and strong coupling regimes.

Jureeporn Yuennan, Farruh Atamurotov, Phongpichit Channuie2026-04-02⚛️ gr-qc

Estimation of the MTOV precision for ET, CE, and NEMO from the post-merger of BNS coalescences

This study demonstrates that even with optimistic signal-to-noise ratios and merger rates, next-generation gravitational wave detectors like Cosmic Explorer can only achieve marginal precision in estimating the maximum neutron star mass (MTOVM_{\rm TOV}) from post-merger signals, highlighting the critical need for improved high-frequency sensitivity to significantly reduce uncertainties.

Gabriela Conde-Saavedra, Odylio Denys Aguiar, Henrique P. de Oliveira, Maximiliano Ujevic2026-04-02⚛️ gr-qc

Probing the Scalar Hair of Rotating Horndeski Black Holes through Thick Disk Images

This paper constructs an analytical model of a thick, magnetized accretion disk around a rotating Horndeski black hole to demonstrate that while scalar hair significantly reduces total flux and ring brightness through enhanced gravitational redshift, it uniquely influences the maximum interferometric diameter of the first photon ring, offering a robust observable for constraining black hole hair with future space-based interferometry.

Qian Wan, Yehui Hou, Minyong Guo2026-04-02⚛️ gr-qc