3248 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 derives analytical black hole metrics surrounded by dark matter spikes using the Tolman-Oppenheimer-Volkoff equations and investigates their gravitational wave ringdown waveforms, revealing that dark matter parameters induce detectable shifts in quasinormal frequencies up to the order of .
This paper analyzes the structure of edge partition functions for massive and massless totally symmetric tensors on , revealing that the edge contribution for linearized Einstein gravity arises from shift-symmetric vector and scalar fields on , which suggests an interpretation involving an embedded brane.
The paper introduces BHaHAHA, the first open-source, infrastructure-agnostic library for numerical relativity that utilizes a novel hyperbolic flow-based approach combined with multigrid-inspired refinements and parallelization to achieve robust and significantly faster apparent horizon finding compared to existing methods.
This paper demonstrates that in dynamical Chern-Simons gravity, the parity-odd trispectrum of curvature perturbations is not an independent observable but can be fully expressed as a rational, factorized "double copy" of the parity-odd graviton power spectrum and the mixed inflaton-graviton bispectrum.
This paper extends classical spectral functionals defined via the Wodzicki residue from torsion-free Dirac operators to geometries with torsion, demonstrating that their local densities recover fundamental geometric tensors and introducing novel chiral spectral invariants through a grading operator.
This paper demonstrates that the one-loop graviton path integral on factorizes into a bulk thermal partition function and an edge contribution involving massless shift-symmetric fields, revealing that graviton edge partition functions probe beyond the horizon's intrinsic geometry and providing a compact formula for the integral on any Einstein manifold.
This paper reviews the cosmic generalization of the virial theorem, known as the Layzer-Irvine equation, examining its applications in dark matter-dark energy interaction models and alternative gravity theories while outlining future research directions.
This paper investigates the optical characteristics, including event horizons, photon spheres, and shadow properties under various accretion models, of two minimal Schwarzschild black hole deformations (Kazakov-Solodukhin and Ghosh-Kumar), using Event Horizon Telescope data to constrain their parameters and proposing a method to distinguish between them based on their distinct shadow sizes, brightness profiles, and photon ring structures.
This paper investigates photon spheres in four-dimensional static and spherically symmetric black holes within dRGT massive gravity, revealing that while standard Einstein-like black holes possess a single unstable photon sphere, specific parameter regions allow for configurations with two or no photon spheres that exhibit distinct topological charges and stability properties compared to horizonless compact objects.
This paper investigates a non-minimally coupled Weyl connection gravity model that unifies gravity and electromagnetism while mimicking dark matter and energy, deriving its cosmological field equations and analyzing scalar perturbations alongside new black hole solutions featuring additional horizons.