3826 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 proposes a five-dimensional Kaluza-Klein framework in teleparallel geometry that unifies gravitational and electromagnetic parity violation into two ghost-free terms, predicting a background-independent relation where the helicity-dependent dispersion shift for electromagnetic waves is exactly six times that of gravitational waves.
This paper investigates the geodesic dynamics, eikonal quasinormal modes, and extended thermodynamic properties of a Schwarzschild-de Sitter-like black hole with a global monopole in Bumblebee gravity, revealing how spontaneous Lorentz symmetry breaking and topological defects alter orbital stability and black hole shadows while imposing strict thermodynamic constraints on the Lorentz-violating parameter through quantum-corrected entropy.
This paper investigates Yukawa cosmology by deriving modified Friedmann equations and applying them to Big-Bang Nucleosynthesis and WIMP freeze-out, revealing that while light element abundances and dark matter relic density place tight, complementary constraints on the Yukawa coupling , the framework fails to resolve the Lithium Problem.
This paper demonstrates that while kurvature acquires large-scale white noise from hard-mode couplings, this does not translate into an infrared-divergent variance for cosmological curvature perturbations () because the noise resides in extrinsic curvature terms rather than intrinsic curvature, thereby resolving concerns about ultraviolet sensitivity in 's power spectrum.
This paper develops a general formalism for exploring primordial cosmological perturbations in an anomaly-induced bounce scenario by formulating a low-energy, local version of the nonlocal effective action using auxiliary scalars to avoid higher derivatives.
This paper establishes a trapped surface formation theorem for the spherically symmetric Einstein-Yang-Mills system with non-trivial incoming data by extending the singular characteristic method to address the new structural difficulties posed by non-abelian gauge field nonlinearities, marking the first step toward proving weak cosmic censorship for this system.
This paper extends previous results on conformal matter fields to conformal quantum gravity, demonstrating that while BRST symmetry ensures the cancellation of gauge-fixing and ghost contributions to the conformal variation of one-loop divergences, the finite parts of the effective action still exhibit conformal anomalies.
This paper refutes claims that large-scale white noise generates an infrared pole in the second-order comoving curvature perturbation, demonstrating instead that such an enhancement is an artifact of misapplying the linear Poisson equation and that the perturbation remains protected by a conservation law in the soft limit.
This paper establishes a dimension-independent boundary reconstruction of Krylov spread complexity for thermofield-double states, demonstrating that in the BTZ black hole dual, the complexity exhibits intermediate deviations from early-time quadratic growth before returning to asymptotic quadratic behavior, which is matched to a generalized bulk "complexity=anything" object constructed from an infinite series of extrinsic-curvature invariants.
This paper extends the analogy between Wigner's friend scenarios and black hole physics to construct a unified argument that closes a loophole in the black hole cloning paradox, demonstrating that no consistent theory can satisfy standard black hole assumptions without violating quantum predictions or no-signalling, while also questioning the validity of those underlying assumptions.