3826 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 introduces a nonlinear Lorentz-invariant kinetic diffusion equation that conserves particle number, energy, and momentum, converges to the Maxwellian distribution in the Newtonian limit rather than the Jüttner distribution, and is compatible with Einstein's equations on general Lorentzian manifolds.
This paper derives and explicitly verifies Schwinger-Keldysh cutting rules for primordial cosmological correlators, demonstrating how their discontinuities can be expressed as products of lower-order correlators through specific diagrammatic combinations that extend beyond standard observable computations.
This paper demonstrates that the controversial Glavan-Lin scaling in 4D Einstein-Gauss-Bonnet gravity naturally arises as a finite, one-loop quantum correction from matter-graviton interactions in a curved background, rather than being an ad-hoc classical modification.
This study investigates how cold dark matter and scalar field dark matter halo models affect the gravitational lensing and shadow signatures of Sgr A* and M87*, finding that both models are consistent with current Event Horizon Telescope observations while predicting distinct caustic topologies that could serve as future observational discriminators.
This paper presents the first joint cosmological analysis using anisotropic galaxy intrinsic alignments from BOSS and DESI data to extract complementary geometric and dynamical information, significantly tightening constraints on the growth rate, expansion history, and dark energy parameters compared to galaxy clustering alone.
This paper establishes an operator formulation of the entropy-geometry correspondence for static, spherically symmetric gravity, demonstrating how various generalized entropy models reconstruct effective nonlocal gravitational theories with scale-dependent Newton couplings that thermodynamically reproduce the area law while recovering standard Schwarzschild geometry in appropriate limits.
Using the Pantheon+ Type Ia supernovae compilation, this study identifies a statistically significant () dipole in the local Hubble constant () at low redshifts () aligned with the Shapley supercluster and CMB dipole, suggesting that observed anisotropy is primarily a low-redshift feature that diminishes as redshift increases.
This paper presents a flexible theory-independent framework to test the nature of compact objects by measuring their spin-induced multipole moments using gravitational waves, demonstrating that next-generation detectors like the Einstein Telescope and Cosmic Explorer will be able to constrain these moments with significantly higher precision than current observations.
This paper derives Lindblad master equations for nonrelativistic matter interacting with quantized gravitational waves, revealing that the intrinsic quadratic coupling decomposes the system into parity sectors and leads to distinct decoherence behaviors—ranging from coherence protection in vacuum to novel dressed dark states in squeezed baths—while demonstrating that realistic graviton-induced decoherence remains negligibly small.
This paper reports a follow-up search for continuous gravitational waves using Advanced LIGO O4a data targeting 562 sub-threshold candidates from a radiometer analysis, which yielded no convincing detections after identifying 21 outliers that failed to persist in subsequent data, while establishing 95% detection efficiency for strain amplitudes between and .