2593 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 the gradient expansion formalism to fermionic axion inflation, demonstrating that Schwinger pair creation of charged fermions damps gauge-field production and attenuates the gravitational wave signal, thereby allowing observable signals from LISA and ET to be compatible with constraints while identifying a new damped oscillatory backreaction regime.
This paper presents a comprehensive comparison of gravitational wave inference methods, demonstrating that the Derivative Approximation for Likelihoods (DALI) offers a significantly more accurate and computationally efficient alternative to traditional MCMC and Fisher Matrix approaches, while introducing the public \texttt{GWDALI} code to facilitate rapid and precise posterior estimation for next-generation observatories.
This paper extends the cosmological bootstrap program to scale-breaking scenarios by deriving integro-differential boundary equations with memory kernels for heavy fields with time-dependent masses, enabling analytical and numerical solutions that reveal exponentially enhanced primordial features in the squeezed bispectrum.
This paper introduces a physics-informed neural network framework that learns Post-Newtonian corrections from a minimal set of numerical relativity waveforms to create a computationally efficient, differentiable bridge between analytical approximations and full numerical simulations, significantly improving waveform accuracy for compact binary coalescences.
This paper presents an analytical study of the interior structure of 3D hairy rotating black holes, revealing a complex dynamics characterized by an infinite sequence of analytically describable Kasner epochs that ultimately evolve into a curvature singularity.
This paper investigates the thermodynamics and binary merger dynamics of Simpson-Visser-regularized Anti-de Sitter black holes, deriving a consistent entropy formula, analyzing non-trivial phase transitions dependent on the regularization parameter, and revealing a non-monotonic behavior in post-merger mass constraints compared to standard black holes.
This paper demonstrates that while particle-mesh approximations and MOND modifications destabilize the three-body system by breaking fundamental symmetries and conservation laws, a specific MOGA modification of gravity can actually stabilize the system.
This paper investigates the semi-classical backreaction of a scalar field in de Sitter spacetime using Thermofield dynamics, revealing that the resulting bulk equation yields a blue-tilted power spectrum () for transient late-time modes while establishing a holographic dual to the Sp(N) model in three dimensions via the computed CFT two-point function and flow equation.
This paper investigates the thermodynamics, particle dynamics, quasiperiodic oscillations, and shadow characteristics of a regular black hole coupled with nonlinear electrodynamics and surrounded by perfect fluid dark matter, utilizing observational data from specific X-ray binaries to constrain its physical parameters.
This paper investigates the divergence issues in bilinear products for Schwarzschild black-hole quasinormal modes on hyperboloidal foliations, proposing regularization procedures and flux-based alternatives to define finite orthogonality relations and explicitly compute excitation factors.