3884 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 within quasi-topological gravity, stable neutron stars can be more compact than black holes, offering potential observational signatures like gravitational-wave echoes to test strong-field gravity beyond General Relativity.
This paper establishes quantitative estimates for systems of wave equations on asymptotically de Sitter vacuum spacetimes in even spatial dimensions, serving as a crucial component for proving a definitive nonlinear scattering theory for the Einstein vacuum equations.
This paper investigates how a harmonically trapped detector responds to classical versus non-classical gravitational fields, demonstrating that while coherent states can be mimicked by stationary classical fields, squeezed states induce unique non-linear time dependencies in transition probabilities due to correlation functions that cannot be replicated classically.
This paper establishes a holographic correspondence between bulk gravitational radiation in asymptotically locally anti-de Sitter spacetimes and dissipative fluid dynamics in the dual boundary theory, extending this framework to the flat limit to reveal how bulk radiation sources Carrollian viscous stress and heat currents in flat-space holography.
This paper utilizes the Fisher matrix formalism to demonstrate that next-generation gravitational wave detectors, such as Cosmic Explorer and the Einstein Telescope, will be capable of distinguishing primordial black holes from exotic compact objects and neutron stars by detecting sub-solar masses out to redshifts of and tidal effects up to .
This paper demonstrates that for dynamical black holes in theories, the Hollands-Wald-Zhang entropy equals the Wald entropy on the generalized apparent horizon, and establishes that only the apparent horizon prescription correctly reproduces this entropy via the replica method while satisfying the physical process first law and a reformulated generalized second law.
This paper resolves controversies regarding the particle spectrum of pure gravity by demonstrating through a full Hamiltonian analysis that while the theory propagates three degrees of freedom globally, its linearized spectrum around Minkowski and other spacetimes is empty due to a constraint degeneracy that renders these backgrounds surfaces of strong coupling, although the universe can still evolve through such singularities.
This paper constructs the graviton propagator in de Sitter space within a generalized one-parameter non-covariant gauge family, providing a simplified form to facilitate future checks of gauge dependence in one-loop computations and proposed observables.
This paper revisits Einstein-Kalb-Ramond gravity to derive two distinct classes of exact static black hole solutions with general topological horizons in diverse dimensions, analyzes their thermodynamic properties using the Wald formalism to establish the first law and clarify the role of Noether mass, and discusses the observational implications of these findings.
This paper presents analytical solutions for cylindrically symmetric black holes and strings sourced by Dekel-Zhao dark matter, revealing that the dark matter profile induces curvature singularities, violates the dominant energy condition in lower dimensions, and critically influences horizon formation and thermodynamic stability through its inner slope parameter.