2593 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.
This paper computes the first-order self-force radiated energy for radially infalling scalar and massive particles released from rest in Schwarzschild spacetime, validates the results with Post-Newtonian checks, and outlines a framework for future higher-order calculations and extensions to other scenarios.
This paper proposes an extension of standard quantum mechanics where Newtonian time is replaced by a stochastic "quantum clock," demonstrating that this substitution leads to a generalized evolution equation for the density matrix that recovers the von Neumann equation at the leading order while introducing higher-order corrections, including Lindblad-type terms, which are constrained by atomic clock precision limits.
This paper investigates a modified gravity theory with a non-minimal coupling within an effective field theory framework, deriving a black brane solution and demonstrating that this interaction modifies holographic transport coefficients—specifically violating the color DC conductivity bound for positive coupling and the KSS shear viscosity bound for negative coupling—while remaining consistent with standard Einstein-Yang-Mills results in the vanishing coupling limit.
This paper introduces DeepRed, a deep learning pipeline that leverages diverse modern computer vision architectures to achieve state-of-the-art redshift estimation across galaxies, gravitational lenses, and supernovae, significantly outperforming existing methods on both simulated and real astronomical datasets while demonstrating robust generalization and interpretability.
This paper demonstrates that the distinct behavior of inertial frame dragging and spin-precession frequencies—specifically their divergence near the horizon for black holes versus their finiteness throughout the spacetime for naked singularities—provides a robust operational method to distinguish between Kerr-Newman black holes and naked singularities, offering a potential test for cosmic censorship through future high-precision observations.
This paper presents strong numerical evidence for the existence of periodic, stationary, axisymmetric solutions containing multiple counter-rotating black hole horizons without conical singularities (struts), demonstrating that such configurations can be constructed for any inter-horizon distance, unlike their static counterparts which face rotational constraints.
This paper extends the analogy between freezing lakes and cosmology by incorporating buoyancy-driven convection into the Stefan problem, demonstrating that the resulting ice growth dynamics structurally reproduce the Friedmann equations with effective terms corresponding to radiation, matter, curvature, a cosmological constant, and a novel contribution analogous to domain walls or energy exchange.
This paper establishes a universal Lagrangian identity for Nambu-Goto -branes and demonstrates its application in gravity, revealing that the proper mass of cosmic string loops and closed -branes can evolve over cosmological timescales, a phenomenon absent in standard general relativity.
This paper proposes that incorporating gravitational backreaction into holographic models requires approximate quantum error correction rather than exact codes, introducing a new entropy decomposition where "proto-area" emerges from tripartite non-local magic in the encoding map, thereby establishing a state-dependent link between bulk matter entropy and boundary geometry.
This paper analytically derives a scaling law for the long-term gravitational wave dephasing caused by a first-order QCD phase transition in a neutron star orbiting a Kerr black hole, demonstrating how the black hole's spin and the transition velocity amplify this effect to probe the high-density QCD equation of state.