3255 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.
Using the gravitational decoupling method, the authors construct spherically and axially symmetric regular hairy black hole solutions that satisfy the weak energy condition and possess well-defined event horizons, emerging from a deformed Minkowski vacuum that can yield Schwarzschild and Kerr geometries.
This paper introduces first-order noncommutative corrections to Einstein-nonlinear electrodynamics using a Drinfel'd twist and Seiberg-Witten map, deriving perturbative solutions for static, spherically symmetric dyonic black holes that account for both intrinsic electromagnetic nonlinearity and noncommutative geometric effects.
This paper numerically investigates the threshold of gravitational collapse in spherically symmetric Einstein-Maxwell-Vlasov systems, revealing a transition from stationary horizonless shells to extremal black holes at a critical charge-to-mass ratio and suggesting a potential mechanism for forming extremal spinning black holes.
This paper demonstrates that applying adiabatic regularization and smoothing the transition between inflation and subsequent cosmological epochs is essential to truncate the unphysical high-frequency rise in the primary gravitational wave power spectrum, resulting in a suppressed, oscillatory behavior at small scales.
This paper demonstrates that the scaling behavior of Synge's world function and the van Vleck determinant changes drastically when emanating from a singular point rather than a regular one, thereby revealing the non-trivial classical structure of spacetime singularities and offering a new tool for investigating their quantum properties.
Using Einstein@Home computing resources to analyze LIGO data from observing runs O3a through O4a, this study conducts the most sensitive search to date for continuous gravitational waves from three central compact objects in supernova remnants, setting unprecedented constraints on their ellipticity and crustal anisotropy while identifying a single surviving candidate from G347.3-0.5 that warrants further investigation with upcoming data.
This paper analyzes the disk path integral of timelike Liouville theory as a two-dimensional toy model for quantum cosmology, computing one-loop wavefunctions in the fixed extrinsic curvature representation, conjecturing all-loop expressions, and proposing a well-defined inner product for Euclidean histories through the pairing of these path integrals.
This paper proposes a new inflationary mechanism in metric-affine gravity where a non-minimal coupling between the inflaton and the Holst invariant, characterized by a steep zero point, generates a quasi-pole kinetic function that transforms any original potential into an exponential plateau yielding Starobinsky-like inflationary predictions.
This paper advocates for using transfinite induction indexed by ordinals to prove the existence of extremal objects in analysis, particularly when real-valued maximization criteria are unclear, while also demonstrating that such a real-valued quantification is possible for the Maximal Globally Hyperbolic Development in General Relativity, offering an alternative to Zorn's Lemma-based proofs.
This paper systematically investigates the nonlinear tails of massive scalar fields around black holes, revealing that while their intermediate-time decay rates match linear predictions regardless of initial conditions, quadratic quasinormal modes offer a viable probe for detecting these nonlinear effects.