3949 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 estimates that nonlinear gravitational effects in the weakly perturbative regime of a Schwarzschild black hole merger generate a degree of squeezing in gravitational waves of approximately one percent, based on predicted higher harmonic amplitude ratios during the ringdown phase.
This paper establishes a quantum version of asymptotic velocity domination for polarized Gowdy cosmologies by demonstrating that the two-point functions of Dirac observables converge to their simplified velocity-dominated counterparts near the Big Bang, while the full correlators can be reconstructed as a uniformly convergent series of averaged spatial gradients.
This paper presents a framework for detecting merging supermassive black hole binaries in pulsar timing array data using a complete waveform model that unifies inspiral, merger, ringdown, and memory signals, demonstrating successful parameter estimation and sky localization while highlighting the biases introduced by simplified memory burst approximations.
This paper derives the first universal, state-independent lower bounds on semi-local integrals of null energy flux in interacting quantum field theories across two and higher dimensions by leveraging the quantum null energy condition, strong subadditivity of entropies, and vacuum modular Hamiltonians.
This paper presents the first exact, non-singular black hole solution in General Relativity sourced by the phantom branch of a Dirac-Born-Infeld scalar field, which resolves the central singularity via kinetic stiffness and allows primordial black holes to survive evaporation as gram-scale relics, thereby opening a new mass window for dark matter.
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 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.