3875 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 parameter-free analytic model predicting that the gravitational wave spectrum from a head-on collision of equal-mass black holes transitions from a flat low-frequency bremsstrahlung to higher frequencies at the final black hole's lowest quasinormal mode, successfully estimating a 13.8% energy emission consistent with numerical relativity.
This paper investigates how a rotating black hole embedded in a Dehnen dark matter halo exhibits modified quasibound state spectra and superradiant scattering, demonstrating that the halo's density and profile parameters act as an environmental tuner that systematically shifts binding energies, alters instability thresholds, and narrows the superradiant amplification window.
This paper reinterprets the Hawking--Page transition through a thermodynamic vector field framework to derive universal ratios and barriers across various black hole geometries, while proposing a novel formulation involving categorical or non-invertible symmetry defects.
This paper introduces Ph-CDM, a General Relativity model utilizing a phantom scalar with a wrong-sign kinetic term to drive a smooth late-time transition from anti-de Sitter to de Sitter space, thereby offering a controlled mechanism to resolve cosmological tensions without resulting in a Big Rip.
This paper investigates the supersymmetry of charged and accelerating black holes within an , supergravity framework on a Bertotti-Robinson background by deriving Killing spinors, demonstrating BPS saturation to determine the black hole's mass and thermodynamics, and generalizing the extremal solution to include a cosmological constant.
This paper presents a general relativistic formulation of stochastic inflation that derives gauge-invariant Langevin source terms for the complete Einstein equations in both ADM and BSSN formulations, thereby enabling the study of all relevant degrees of freedom beyond slow-roll approximations and facilitating 3+1 numerical relativity simulations.
This paper quantifies the classicality of inflationary perturbations by analyzing on-shell and off-shell contributions to the bispectrum, demonstrating that non-linear interactions can be accurately described by classical evolution even prior to horizon crossing and establishing criteria for the validity of stochastic inflation approximations.
This paper demonstrates the feasibility of performing high-precision, fully non-linear Numerical Relativity simulations of cosmological inflation by employing Bunch-Davies initial conditions that satisfy General Relativity constraints, thereby validating standard perturbation theory in the linear regime and quantifying strongly non-linear dynamics in complex scenarios.
This paper demonstrates that four-dimensional de Sitter vacuum solutions can be realized on probe D3 and D5 branes nucleated in an asymptotically background by leveraging stringy corrections, high chemical potentials, and specific gauge field configurations without the need for fine-tuning.
This paper utilizes the fluid/gravity correspondence within the AdS/BCFT framework to demonstrate that specific metric boundary conditions on an end-of-the-world brane naturally induce corresponding boundary conditions for the velocity and temperature fields of conformal fluids in the dual boundary conformal field theory.