2575 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 investigates quantum corrections to the Randall-Sundrum model in a near-extremal black brane background by incorporating Jackiw-Teitelboim gravity and Schwarzian modes, deriving the corrected Kaluza-Klein mass spectrum, and analyzing the impact on the Goldberger-Wise mechanism to provide new insights into cosmology and phase transitions.
This paper presents the first comprehensive search for gravitational wave memory from supermassive black hole binary mergers and generic bursts using PPTA and EPTA data, employing full numerical relativity waveforms and advanced posterior approximation techniques to establish stringent upper limits on merger rates and burst strain amplitudes.
This paper presents exact solutions for bumpy black holes and black branes in the Einstein $SU(2)$ non-linear sigma model, where superfluid pion multi-vortices induce horizon deformations governed by a Liouville equation and characterized by a topological vorticity invariant that dictates the geometry and thermodynamics.
This paper utilizes high-performance CUDA simulations combined with the Hamilton–Jacobi formalism to investigate the shadows and energy emission rates of rotating charged Euler–Heisenberg black holes with global monopoles, revealing that while the global monopole, electric charge, and rotation parameters significantly influence these properties, the Euler–Heisenberg nonlinear parameter has a negligible effect, thereby enabling the establishment of strict bounds on the former parameters to reconcile with Event Horizon Telescope observations.
This study presents numerical-relativity simulations of binary neutron star mergers incorporating muons and muonic reactions, revealing that their inclusion has a relatively minor impact on remnant evolution and ejecta properties compared to previous literature, suggesting less severe consequences for nucleosynthetic yields and electromagnetic counterparts.
This paper demonstrates that Many-Body Gravity (MBG), a modified 5-D gravity theory, naturally reproduces cosmic inflation and resolves time-definition issues in non-interacting universes by utilizing entropic terms and interacting massless scalar fields, all without requiring dark matter.
This paper investigates the gravitational lensing signatures of Hayward-like regular black holes, finding that while weak-field effects are negligible and the asymptotic strong-field position matches the Schwarzschild case, future high-precision measurements of strong-lensing observables like angular separations and time delays could potentially distinguish these regular black holes from standard Schwarzschild black holes.
This paper demonstrates that incorporating Einstein-Gauss-Bonnet gravity with specific non-minimal coupling functions (exponential and hyperbolic secant) successfully reconciles quintessential inflation models with recent Atacama Cosmology Telescope constraints on the scalar spectral index and tensor-to-scalar ratio, while also establishing viable reheating scenarios consistent with Big Bang nucleosynthesis.
This paper establishes the first proof of nonlinear Landau damping for charged self-interacting plasmas in an expanding Newtonian cosmological setting, demonstrating that charge density contrasts decay superpolynomially for small Gevrey-class perturbations when the scale factor grows as with .
This paper corrects the subleading coefficient in the regular-center Frobenius expansion for static tidal perturbations of relativistic stars and extends the even-parity master equation to Schwarzschild-de Sitter backgrounds, demonstrating that while the corrected coefficient alters initial data, it does not affect the extracted Love number .