3826 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 radial action for massive particles in various spherically symmetric spacetimes to derive fully resummed expressions for scattering angles and quantum Seiberg-Witten cycles using special functions, thereby extending previous results from null to massive geodesics.
This paper investigates cosmological collider signatures in a two-field inflationary system with constant-turn derivative mixing by utilizing exact hypergeometric solutions and a Mellin-Barnes approach to derive the full non-perturbative dependence of the squeezed bispectrum's oscillation amplitude and phase on the mixing strength and heavy field mass.
This paper introduces a class of regular axisymmetric black hole geometries characterized solely by mass and spin that interpolate between regular spacetimes and the Kerr solution, featuring quasi-extremal configurations independent of the spin-mass ratio and offering a framework for analytically describing Kerr black hole formation.
This paper critically reassesses and corrects mathematical inconsistencies in the 2020 study "Non-linear interactions in cosmologies with energy exchange," demonstrating through exact analytical solutions that the original article's flawed derivations invalidate its primary claims.
This paper investigates the Casimir effect for a massive scalar field with a position-dependent effective mass between parallel plates, deriving exact normal modes that yield a Landau-like energy spectrum and demonstrating that the resulting renormalized vacuum energy is dominated by this sector and exponentially suppressed in the strong-coupling regime.
The paper introduces BAT-GLIMPSE, an autonomous open-source pipeline that utilizes coded-mask imaging and mosaic techniques to enable low-latency, arcminute-precision localization of gamma-ray transients in Swift-BAT data during both pointing observations and spacecraft slews, thereby significantly enhancing the mission's multi-messenger capabilities.
This paper investigates the thermodynamic topology of charged AdS black holes in non-commutative spacetime using perturbative and numerical methods, demonstrating that non-commutative effects qualitatively modify phase transitions, establish an identical global topological correspondence between bulk and boundary descriptions, and alter the lower bounds on remnant mass and entropy.
This paper investigates primordial black hole formation during the preheating phase of -attractor inflation, demonstrating that while the Press-Schechter formalism overestimates abundance and is ruled out by observational constraints, the Khlopov-Polnarev formalism—which accounts for nonspherical collapse effects—yields viable predictions consistent with current data.
This paper demonstrates that imposing causality constraints (the absence of superluminal propagation) in nonlinear electrodynamics leads to specific monotonicity properties for the mass-to-charge ratio and entropy density of extremal black holes, thereby extending previous findings on entropy corrections to all orders in the theory.
This paper establishes a thermodynamic positivity bound on higher-derivative 3-form couplings in de Sitter space, demonstrating that the exact Nariai state saturates the classical black hole mass limit and revealing that such thermodynamic constraints are more stringent than inflationary dynamics alone, thereby ruling out small-field models while supporting large-field Higgs-like inflation consistent with Planck data.