3784 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 demonstrates that in the Palatini formulation of asymptotically Weyl-invariant gravity, the ultraviolet limit uniquely selects an action, which exhibits improved ultraviolet behavior with divergent counterterms reducing to the original action and a topological term, offering nontrivial evidence for better renormalizability compared to Einstein gravity.
This paper presents a stochastic-semiclassical model demonstrating that as a black hole's geometry approaches a critical double-root merger, colored noise-induced stress-tensor fluctuations are amplified by geometric susceptibility, leading to enhanced horizon fluctuations, correlated temperature variations, and positively skewed luminosity.
This paper forecasts that future pulsar timing observations near Sgr A*, particularly those involving short-period, high-eccentricity orbits, could constrain Buchdahl-inspired gravity to a precision of , significantly surpassing current limits derived from the S2 star.
This paper develops a covariant framework for Josephson interferometry in a scale-dependent Oppenheimer–Snyder-like black-hole spacetime, deriving exact relations for redshifted transport, interference patterns, and noise spectra while establishing consistency bounds on the running parameter.
This paper develops a unified analytic framework for describing black hole critical curves and photon rings in separable, non-Kerr spacetimes for polar observers, deriving exact expressions and first-order formulas that reveal these observables depend only on local deformation values and derivatives at the critical orbit rather than the full radial metric profiles.
Using direct -body simulations, this paper proposes that primordial black hole clusters form with a short-lived, dense core and an extended halo, a two-regime structure that resolves the tension between generating observed black hole spins and ensuring cluster survival while predicting a distinct stochastic gravitational-wave background and specific spin-mass signatures for future detectors like LISA.
The paper introduces SEOBNRv6EPHM, the first effective-one-body model capable of accurately and efficiently describing gravitational waves from spin-precessing binary black holes on generic orbits, thereby enabling joint analysis of eccentricity and spin precession in gravitational-wave data.
This paper proves that spherically symmetric solutions to the non-linear Maxwell-Charged-Scalar-Field equations on sub-extremal Reissner-Nordström or Schwarzschild exterior space-times remain bounded and decay at an inverse polynomial rate towards time-like infinity and the event horizon, provided the charge is sufficiently small.
This paper identifies and classifies 97 pairs of hyperbolic Lie algebras and their "superized" almost affine Lie superalgebra counterparts that share identical Weyl chambers, thereby revealing a hidden supersymmetry where the tracks of cosmological billiards remain invariant despite the transition from bosonic to supersymmetric structures.
This paper proposes a novel "stochastic siren" method that utilizes the stochastic gravitational-wave background from binary black hole mergers to measure the Hubble constant independently of electromagnetic observations and resolved standard sirens, potentially offering a unique pathway to resolving the Hubble tension through the progressive tightening of lower bounds as non-detections continue.