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 the Targeted Detectability Range (TDR), a computationally efficient method that leverages external messenger data—such as sky localization and mass constraints—to rapidly estimate the gravitational-wave detectability of compact binary coalescences, a framework validated against LIGO-Virgo-KAGRA observations of gamma-ray bursts.
This paper demonstrates that coupling Ostrogradsky ghosts to dissipative baths within a non-equilibrium Keldysh-Lindblad framework can stabilize these unstable modes through a dissipative phase transition, effectively suppressing ghost excitations via either dynamically generated effective masses or strong overdamping.
This paper presents the maximal analytic extension of a Schwarzschild-like black hole solution in Lorentz gauge theory, demonstrating that while its causal topology mirrors the standard Schwarzschild spacetime, its geometric properties such as horizon scale and surface gravity are uniquely determined by the parameter .
This paper investigates fermion localization in a five-dimensional braneworld within modified teleparallel gravity , demonstrating that non-minimal coupling to torsional invariants, particularly the teleparallel Gauss-Bonnet term, significantly alters effective potentials to enable the localization of a single chiral zero-mode and the emergence of resonant states, while information-theoretic measures confirm that these torsional modifications induce stronger confinement and nontrivial information redistribution.
This paper resolves a question by Chernov, Kinlaw, and Sadykov by proving that globally hyperbolic spacetimes can be refocusing without being strongly refocusing, while also demonstrating that Legendrian refocusing spacetimes admit strongly refocusing metrics.
This paper investigates non-interacting holographic dark energy with the Hubble radius as an infrared cutoff within Einstein-Cartan gravity, demonstrating that a Weyssenhoff spin fluid naturally induces a torsion scalar scaling as , which drives cosmic acceleration, allows the dark energy equation of state to cross the phantom divide, and modifies the cosmic distance duality relation while remaining consistent with recent DESI observations.
This paper proposes a minimal mechanism where coupling dark photons with standard photons generates primordial magnetic fields of approximately G, effectively overcoming the strong-coupling and backreaction problems that plague conventional nonminimal inflaton-electromagnetic field models.
This study demonstrates that within a dynamical dark energy (CPL) framework, modified gravity effects capable of suppressing low-redshift structure growth while satisfying CMB constraints must operate on comoving scales smaller than approximately 10 Mpc, a scenario that is moderately preferred over standard CDM and further strengthens the case for quintom-like dark energy when combined with current cosmological datasets.
This paper investigates how swampland-motivated priors on the slope and field excursion of an exponential quintessential dark energy model, when combined with observational data from Planck, DESI, and supernovae, can shift the inferred value of spatial curvature () compared to standard theory-agnostic analyses.
This paper investigates a system of electric charges from visible and dark matter sectors near magnetic poles, revealing that such stationary charges possess intrinsic angular momentum and, when placed outside a magnetically charged black hole in dark photon theory, cause the spacetime to appear as a stationary axisymmetric black hole at large distances.