2593 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 explores flat FLRW metric-affine cosmology with symmetric matter and hypermomentum, proposing that a dark dust fluid carrying spin hypermomentum exhibits a dynamical effective equation of state that could potentially explain recent DESI DR2 observations.
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 persistence of black holes through a cosmological bounce in New General Relativity by analyzing a generalized McVittie spacetime, revealing that while the background evolution resembles a standard bounce, the local horizon dynamics are qualitatively altered and symmetry is disrupted at higher perturbative orders due to the theory's specific curvature renormalization and perturbation signs.
This paper establishes a consistent mapping between tidal Love numbers and Wilson coefficients in higher-curvature gravity effective field theories, identifying flaws in standard General Relativity matching approaches and explicitly demonstrating the procedure for cubic gravity.
This study analytically demonstrates that rotating charged de Sitter black holes in Conformal Weyl Gravity exhibit significant suppression of superradiant amplification for both massless and massive conformally coupled scalar fields compared to General Relativity, with the massive sector showing particularly strong exponential suppression in the cosmological region.
This paper establishes a formal gravity/thermodynamics correspondence by demonstrating that the cuspy features and self-intersection of black hole shadows map to swallowtail behavior in thermodynamic free energy, revealing that these geometric phase transitions belong to the mean-field universality class.