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 establishes a canonical isometric embedding of any 2-sphere into Minkowski space by identifying a unique symmetric trace-free tensor that complements the Ricci tensor, thereby revealing a natural Minkowski structure within the solution space of a derived linear second-order PDE.
This study demonstrates that while rotating Hayward black holes embedded in dark matter halos exhibit additive enhancements to radiative efficiency that create a spectral degeneracy with classical Kerr-plus-dark-matter models at low frequencies, this degeneracy is uniquely broken in the extreme Wien tail of the spectrum, offering a critical diagnostic for distinguishing non-singular black holes from standard astrophysical environments.
This paper investigates how quantum gravity corrections and perfect fluid dark matter induce chaotic photon dynamics and alter the stability of circular orbits around rotating black holes, utilizing advanced nonlinear analysis tools to reveal significant implications for black hole shadows and gravitational lensing.
Using -mapping topological current theory, this study identifies a novel inner secondary topological subclass within regular Bardeen-AdS black holes, characterized by a vanishing global charge and a unique horizon winding signature arising from an extra stable branch, thereby refining the thermodynamic topological classification of singularity-free geometries coupled to nonlinear electrodynamics.
This paper presents a hybrid SpectralPINN solver that accurately computes coupled Kerr-Newman quasinormal modes, systematically characterizing the previously unexplored vector-led photon-sphere branch and providing a benchmark dataset to analyze eigenvalue repulsion and forecast constraints on black-hole charge-to-mass ratios for the Einstein Telescope.
This paper demonstrates that controlled violations of the null energy condition in a holographic model dual to a non-Hermitian -symmetric QFT lead to a novel black hole interior characterized by an isotropic Little Rip cosmology, which can be distinguished from standard Kasner regimes via heavy-operator correlators.
This paper confirms the existence of a MOND-type gravitational anomaly in wide binary stars at low accelerations by demonstrating that rigorous data quality control and realistic modeling of multiple-star systems cannot eliminate the observed deviation from standard gravity, attributing conflicting previous results to calibration biases, unaccounted selection effects, or insufficient statistics.
This paper presents a nonperturbative analytic framework for multifield inflation that resums strong curvature-isocurvature mixing to all orders, deriving exact bispectrum expressions that reveal dramatic enhancements and distinctive scaling laws in the strong-mixing regime where conventional perturbation theory fails.
This paper investigates spontaneous scalarization of charged black holes in Gauss-Bonnet extended Starobinsky-Maxwell gravity, revealing a novel multi-branch structure where scalarized solutions split into two smooth branches and an additional disconnected branch, while confirming that all resulting hairy solutions strictly satisfy the first law of thermodynamics.
This paper establishes the -inextendibility of one-horizon Birmingham-Kottler spacetimes with nonpositive cosmological constant and general closed fibers by proving a local obstruction to continuous extensions at warped spacelike singularities and classifying the finite proper-time ends of timelike geodesics without requiring symmetry or homogeneity assumptions.