3919 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 a gravity-scalar system with a scale-dependent kinetic form factor admits a non-trivial asymptotically safe fixed point characterized by non-local scaling behavior at the cutoff scale that becomes local in the continuum limit.
This paper constructs an effective-field-theory framework that bridges late-time scalar-tensor cosmology and black-hole ringdown observables, demonstrating how cosmological constraints can inform strong-field priors while revealing that operators vanishing in homogeneous backgrounds may still remain active in the anisotropic near zone of black holes.
This paper investigates causality in curvature-squared gravity by analyzing Gödel, Gödel-type, and axially symmetric cosmological solutions, finding that the first two models permit closed timelike curves while eliminating Weyl tensor contributions, whereas the third model reveals Weyl tensor effects that modify the weak energy condition.
This paper proposes a general post-Newtonian gravitational collapse model derived from linearized gravity that extends the Diósi-Penrose mechanism to include rotational and mixed mass-rotation degrees of freedom by incorporating both gravitoelectric and gravitomagnetic couplings.
This paper investigates how classical polymerization and generalized uncertainty principle (GUP) deformations alter the dynamics of the Bianchi IX Mixmaster universe, revealing that while GUP corrections enhance chaos by shortening Kasner epochs, polymer corrections suppress it by prolonging them, with combined effects producing an additive shift that modulates the strength of early-universe chaos.
This paper introduces the phenomenological parameter to quantify charge-dependent violations of the Equivalence Principle, establishes a new experimental bound of , and argues that measuring this parameter offers a unique, unexplored pathway to detect new physics beyond minimal gravitational effective field theories.
This study evaluates the impact of the unresolved compact binary coalescence background on continuous gravitational wave searches in the Einstein Telescope, finding that it acts as an additional noise source that degrades detection sensitivity by approximately 7–10% around 7 Hz.
This paper establishes a sharp lower bound for the mass of ALE and ALF toric 4-manifolds with nonnegative scalar curvature in terms of corresponding gravitational instantons and conical defects, proving that equality holds only when the manifold is Ricci flat and identical to the instanton, thereby offering a refined positive mass theorem and a variational characterization for these geometries.
This paper derives the curvature expansion for the heat kernel trace and one-loop effective action of a non-vacuum quantum state in a quasi-thermal, non-static Euclidean gravitational background by introducing a covariant vector field that generalizes the Killing vector to inhomogeneous metrics, thereby establishing a locally rescaled effective temperature and analyzing the high-temperature asymptotics of nonlocal formfactors for potential cosmological applications.
This paper proposes that ordered atomic arrays can exhibit a novel form of gravitational wave-induced superradiance, where spacetime geometry mediates long-range dissipative coupling to produce intense, delayed photon emission, thereby establishing engineered quantum many-body systems as a new platform for probing the intersection of general relativity and quantum mechanics.