3875 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 introduces a graphical coaction framework for Friedmann-Robertson-Walker (FRW) integrals at all loop orders using intersection theory in twisted (co)homology to decompose cosmological observables into graph-based building blocks, thereby revealing the combinatorial structure of their governing differential equations and providing open-source tools for their computation.
This paper theoretically investigates charged particle dynamics in the magnetic field generated by a toroidal current loop around a Schwarzschild black hole, demonstrating how attractive Lorentz forces lead to the formation of toroidal radiation belt-like structures while highlighting general relativistic effects and the necessity of finite-width current distributions to avoid physical divergences.
This paper presents a comprehensive general relativistic study of how gravitationally bound dark matter admixed with neutron stars modifies fundamental -mode oscillation frequencies and damping times, establishing new asteroseismic universal relations and deriving multimessenger constraints from the GW170817 event.
This paper investigates infrared-finite energy correlators in four-dimensional gravity by computing one- and two-loop corrections in supergravity and Einstein gravity, demonstrating infrared divergence cancellation, deriving universal soft-graviton dynamics in the back-to-back limit, and exploring dispersion relations and unique gravitational singularities.
This paper presents a model-agnostic search framework for long-lived gravitational wave echoes using a phase-marginalized likelihood and optimized noise handling, which was applied to three high-SNR binary black hole merger events (GW150914, GW231226, and GW250114) to find no significant evidence for echoes and establish 90% upper limits on their signal strength.
This paper analyzes the Hamiltonian constraints of metric gravity to demonstrate that phase-space singularities at and lead to distinct perturbative degeneracies, specifically causing an empty linearized spectrum for backgrounds residing entirely on these surfaces while requiring a regularity condition rather than a standard constraint for trajectories that dynamically cross them.
This paper derives the leading-order post-Newtonian effects of horizon absorption in eccentric, precessing binary black hole inspirals and demonstrates that while these effects are often degenerate with other parameters in quasi-circular systems, they become potentially measurable and critical for accurate parameter estimation in eccentric binaries with high signal-to-noise ratios.
This paper demonstrates that the apparent singularities in gravity at critical coupling surfaces where are merely artifacts of the equation's formulation, revealing instead regular fundamental equations that define gravitational screening boundaries separating attractive and repulsive phases while obstructing a global Einstein-frame description.
This paper investigates spherically symmetric general relativistic Bondi accretion with a position-dependent adiabatic index by classifying its transonic solutions via dynamical systems theory, demonstrating their linear stability, and deriving the corresponding emergent acoustic spacetime and its causal structure to bridge astrophysical, dynamical, and analogue gravity perspectives.
This paper proposes a minimal predictive cosmological model where cosmic acceleration emerges naturally from quantum post-selection and coarse-graining, offering a statistically competitive alternative to the CDM model without requiring a cosmological constant, dark energy, or modified gravity.