2489 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 presents a self-contained derivation of the Hamiltonian formulation of General Relativity in vielbein variables across dimensions, establishing the constraint algebra, relating it to the metric formulation, and constructing the boost generator to recover full local Lorentz symmetry within an -covariant framework.
This paper introduces a constructive asymptotic regularization method for quantum field theory that isolates and subtracts ultraviolet divergences by decomposing integrand asymptotics, thereby preserving covariance and gauge symmetry while offering a novel derivation of logarithmic terms independent of standard renormalization-group flows.
This paper investigates how braneworld corrections weaken gravity around black holes sourced by bulk matter, preventing horizon formation in sub-stellar mass environments and producing distinct, constraining optical signatures in the black hole shadow and Einstein ring radii.
This paper investigates a static, spherically symmetric ModMax black hole surrounded by perfect-fluid dark matter within Lorentz-violating Kalb-Ramond gravity, revealing how the interplay of nonlinear electrodynamics, Lorentz symmetry breaking, and dark matter modifies the horizon structure, thermodynamic stability, and phase behavior of the system.
This paper proposes that the energy-momentum tensor of the neutrino flavor vacuum in curved spacetime behaves as cold dark matter, generating a Yukawa correction to the Newtonian potential that successfully explains the flat rotation curves of spiral galaxies.
The paper demonstrates that while radiation from a uniformly accelerating charge escapes beyond the Rindler wedge, no electromagnetic flux crosses infinity within the wedge itself, a result that holds true in both Minkowski and Rindler frames despite the non-trivial coordinate transformation at infinity.
This paper reformulates the Tolman-Oppenheimer-Volkoff equations for static, spherically symmetric perfect-fluid stars within the semi-tetrad formalism as a covariant first-order dynamical system, enabling a geometric analysis of stellar structure through autonomous flows in phase space for both linear and general equations of state.
This paper presents a proof-of-concept Simulation-Based Inference pipeline that utilizes neural emulators trained on hydrodynamical simulations to extract cosmological parameters from 3D galaxy and neutral hydrogen maps, demonstrating that field-level multi-tracer analysis significantly outperforms traditional summary statistics by improving constraints by factors of 2 to 7 while robustly marginalizing over astrophysical uncertainties.
This paper establishes a universal, state-independent threshold for entanglement generation under general bilinear interactions in thermal environments, demonstrating that the interaction strength must exceed thermal noise to create entanglement regardless of initial states or mediator systems.
This paper demonstrates that while Horndeski gravity with shift symmetry and a linear potential can theoretically enable dark energy to cross the phantom divide via a nearly conserved scalar charge, such simplified models fail to accurately fit current observational data, prompting the authors to provide an interactive tool for further exploration.