3256 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 novel framework for directly evaluating the full hierarchical population likelihood within the LISA global fit, introducing the GPU-accelerated PELARGIR module to jointly infer individually-resolved sources, the unresolved Galactic foreground, and their underlying astrophysical population, thereby overcoming the circular dependencies inherent in current post-processing approaches.
This paper investigates the dynamical evolution of a Schwarzschild black hole in Modified Gravity under scalar gravitational waves, demonstrating how non-thermal particle creation and the formation of stable zero-temperature remnants resolve the black hole information paradox while preserving the Generalized Second Law of thermodynamics.
This paper employs lattice simulations to demonstrate that nonperturbative scalar dynamics during ultra-slow-roll inflation can significantly alter the amplitude and spectral shape of scalar-induced gravitational waves, revealing that standard semi-analytical perturbative methods often fail to provide reliable predictions in regimes of large non-Gaussianity.
This study investigates the impact of Hawking radiation in Schwarzschild spacetime on quantum imaginarity, revealing that while nonlocal advantage is suppressed in the physically accessible region and absent in the inaccessible region, assisted imaginarity distillation exhibits opposite monotonic trends in fidelity between these two regions as temperature increases.
This paper investigates whether the Planck PR4 CMB data's mild preference for dynamical dark energy in the CDM model is partially driven by residual excess smoothing in the anisotropy spectra, finding that while PR4 data reduce the CMB lensing anomaly compared to PR3, the observed evidence for evolving dark energy may still be influenced by these residual smoothing effects.
This paper presents the first measurement of the Hubble constant () derived solely from the dispersion measure distribution of 2,124 unlocalized fast radio bursts, demonstrating their potential as a new cosmological probe that can constrain without requiring redshift information.
This paper investigates the gravitational production of massless vector particles during inflation, demonstrating that highly energetic, nearly collinear pairs are preferentially generated on sub-Hubble scales due to polarization effects, while also quantifying the resulting super-Hubble entanglement and establishing a lower bound on the reheating temperature.
This paper constructs a model of slowly rotating, non-singular wormholes supported by a quantum-corrected Dymnikova-Schwinger matter source and analyzes how both rotation and generalized uncertainty principle effects modify photon trajectories and the resulting black hole shadow.
This paper derives the renormalized one-loop equation of motion for an inflaton coupled to massless spectator fields, demonstrating that radiative corrections induce a quadratic secular growth in the inflaton field that invalidates standard phenomenological friction models, while simultaneously establishing a generalized optical theorem to quantify the exponential production of spectators during slow-roll inflation.
This paper investigates the Lyapunov exponents of spinor fields in Einstein-Euler-Heisenberg-Anti-de Sitter spacetime, revealing that chaos bound violations are highly sensitive to particle spin orientation and specific parameter ranges, differing significantly from the behavior observed in Reissner-Nordström spacetimes.