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 derives Hawking radiation and identifies a thermalized "quantum atmosphere" extending to approximately $2.77$ times the Schwarzschild radius by analyzing the -matrix scattering of a scalar field near a black hole, which reveals antibound states corresponding to the atmosphere's constituents.
This paper investigates the production of dark-photon dark matter from quantum fluctuations during Starobinsky inflation, demonstrating that the Weyl transformation-dependent variation of the longitudinal mode's kinetic function significantly impacts the relic abundance and constrains the dark-photon mass to the range of 5.6–7.4 μeV to match observed dark matter density.
This paper develops a quantitative framework to test the Hubble tension within an anisotropic Bianchi type I cosmology by deriving a weak-shear luminosity-distance quadrupole, demonstrating that while current early-Universe bounds on shear are too tight to resolve the tension, the proposed analytic method provides a falsifiable program for detecting late-time anisotropy using standard candles and sirens.
This paper proposes enhancing the sensitivity of magnetic Weber bars for detecting high-frequency gravitational waves by utilizing Halbach array configurations and analyzing ring-down signals, demonstrating the potential to achieve strain sensitivities of with current technology and up to with plausible upgrades across a broad frequency range.
This paper demonstrates that the Extended Uncertainty Principle (EUP) naturally resolves infrared divergences in entanglement entropy by introducing geometric corrections that enforce spatial confinement, thereby preventing zero-mode delocalization and ensuring finite entropy even in massless quantum field theories.
This paper derives a first law of proto-area entropy within the CCKLP–Witten framework, demonstrating that for near-maximally-mixed bulk states under a Gaussian-unitary-ensemble model, the ensemble-averaged proto-area entropy varies linearly with bulk entropy with a universal coefficient of , thereby parametrically matching the semi-classical relation between area change and bulk entropy change.
This paper proposes an inflationary mechanism driven by flux stationarity near Calabi-Yau Hodge boundaries, which stabilizes moduli without extra flux costs and directly links internal geometric properties to observable primordial tensor perturbations that align with current CMB limits and future LiteBIRD and CMB-S4 targets.
This paper investigates inflation driven by dynamical torsion in gravity theories, demonstrating that anomaly-induced decays into gauge bosons and Higgs-involved three-body processes provide a non-vanishing inflaton decay width, thereby establishing a natural lower bound on the reheating temperature.
This paper proposes and applies a method to derive consistent equations for cosmological structure formation across all scales in relativistic MOND theories, specifically generalized Einstein-Aether models, demonstrating that a single free function governs the background, linear, and non-linear regimes while clarifying that galactic-scale MOND behavior does not necessarily imply cosmological-scale modifications.
This paper proposes "lens stochastic diffraction" (LSD), a method that detects the collective, correlated fluctuations of secondary gravitational-wave images caused by intervening compact objects to statistically probe dark matter halos and supermassive black holes with significantly higher sensitivity than traditional individual lensing searches.