3254 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 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.
This paper introduces a novel three-dimensional post-collapse Lagrangian perturbation theory (PCPT) that overcomes shell-crossing singularities by combining high-order perturbation evolution with one-dimensional caustic analysis to accurately model nonlinear matter dynamics after collapse, as validated against high-resolution Vlasov-Poisson simulations.
This paper proposes an experimental scheme using atomic clocks in varying mass-density environments to constrain the parameter space of the environmentally dependent dilaton model, revealing that future high-precision gravitational redshift measurements can probe weak couplings complementary to existing tests.
This paper generalizes the covariant phase space formalism to semi-classical gravity by defining a semi-classical symplectic two-form as the sum of the gravitational symplectic form and the Berry curvature of the quantum matter state, demonstrating its slice independence and its duality to the Berry curvature in the boundary CFT within the AdS/CFT framework.
This paper derives relativistic Maxwell-Bloch equations to demonstrate that the coherence and response of radiating systems exhibiting maser action and Dicke superradiance are preserved across different reference frames, while their timescales and intensity transform according to relativistic principles.