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 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 .
This paper presents a numerical-relativity study of boson star-black hole head-on collisions, introducing a conformal-factor correction to generate stable initial data and demonstrating that higher-order gravitational-wave multipoles serve as key observables for distinguishing these mixed mergers from pure black hole binaries.
This paper introduces a novel Kontorovich-Lebedev-Fourier frequency-momentum space for de Sitter correlators derived from the decomposition of spacetime isometry group representations, which simplifies perturbative computations by transforming propagators into rational functions and recasting loop integrals as orthogonality relations among group-theoretical coefficients.
This paper demonstrates that the Aretakis instability weakens as the degree of horizon degeneracy increases, leading to the proposal of a new black hole geometry with an infinitely degenerate horizon that is stable and could serve as a final "graveyard" state for extremal black holes.
This paper demonstrates that while the Q-SC-CDM decaying dark energy model lacks stable attractor solutions under previously proposed parameter constraints, a simple alternative choice of parameters successfully yields a stable attractor with a phase portrait where all trajectories converge.
This paper investigates solutions to the Einstein-Dirac equations demonstrating that a classical spinor field can condense into a delta-like distribution concentrated specifically at the event horizon of a black hole.