3255 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 presents an analytically tractable model of a driven quantum harmonic emitter to characterize early-time quantum correlations between the drive, emitter, and fluorescence, demonstrating how joint measurements of the emitter and its radiation can probe the quantum noise of the driving field for applications in quantum sensing across optical, acoustic, and gravitational scenarios.
This paper proposes a regularization framework for black holes where a fundamental minimal length replaces the singularity with an "asymptotic throat" that avoids topological changes and multiple horizons while preserving standard surface gravity and Hawking temperature.
This paper constructs a new class of finite-energy, horizonless, and linearly stable stationary spacetimes with exactly flat spatial geometry, demonstrating that smooth differential rotation alone can generate non-trivial curvature, frame-dragging, and wave phenomena without requiring a central mass.
This paper proposes a tabletop detector model using a charged array of quantum harmonic oscillators in a cavity, where pumping with low-frequency photons enhances transition probabilities to enable the absorption or emission of single gravitons accompanied by photon exchange, thereby offering a potential method to "visualize" quantum spacetime ripples.
This paper establishes a mathematical link between special relativistic and generalized Kepler models by demonstrating that solutions to the former with fixed energy can be reparameterized as solutions to the latter, which features an additional potential term analogous to the Levi-Civita correction.
This study reveals that rotating scalarized Kerr-Newman black holes can exhibit complex optical signatures distinct from standard Kerr black holes, including additional inner photon shells and critical curves that generate unique crescent-like higher-order images, offering potential observational tests for Einstein-Maxwell-scalar theories.
This paper utilizes recently constructed numerical rotating black hole solutions and a pseudo-spectral collocation method within an effective field theory framework to compute leading-order cubic-curvature corrections to scalar quasinormal mode frequencies for rapidly rotating black holes up to near-extremal spins, revealing that these corrections grow significantly as the spin approaches the extremal limit.
This paper equips the space of Cauchy hypersurfaces in globally hyperbolic spacetimes with a natural Hausdorff-type metric to investigate its completeness and local compactness properties, while also generalizing existing completeness results for Lorentzian manifolds and synthetic Lorentzian settings.
This paper investigates how centrifugal and gravitational electromotive forces enhance magnetic reconnection rates in a Kerr black hole background through distinct mechanisms: gravitational forces break plasma quasi-neutrality via charge separation, while centrifugal forces amplify carrier transport and thermal inertia by shortening the effective current sheet length due to non-Euclidean geometry.
This paper establishes a fundamental, Heisenberg-rooted tradeoff relation that tightly constrains the ultimate quantum precision limits for multiparameter linear measurements of classical monochromatic signals, providing a necessary condition for optimal protocols and offering guidance for tuning detuned gravitational wave sensors to search for post-merger remnants.