3919 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 investigates thermodynamic chaos in Hayward AdS black holes with string fluids using Melnikov's method, revealing that while charge is essential for chaos under temporal perturbations, spatial perturbations induce chaos regardless of charge, with both the string fluid density and Hayward regularization parameter significantly influencing the Lyapunov exponent.
This paper develops a canonical formalism using Dirac brackets to demonstrate that the quantum metric in momentum space modifies the phase-space density of states at order , thereby correcting Liouville's theorem and extending chiral kinetic theory to include nonlinear effects consistent with quantum field theory.
This paper proposes using a Legendre polynomial basis instead of the traditional Fourier basis for pulsar timing array analysis to simplify the incorporation of pulsar modeling effects and derive analytic closed-form expressions for the Hellings and Downs correlation estimator and its variance when power spectra follow power laws.
Through a reanalysis of data from the CAPP-12T MC-Axion Haloscope experiment, this study establishes exclusion limits for monochromatic high-frequency gravitational waves for the first time, demonstrating the suitability of electromagnetic resonant cavities as detectors and constraining black hole superradiance scenarios involving axion clouds.
This paper introduces the Dual-Channel Lensing feature extraction eXtended Long Short-Term Memory Network (DCL-xLSTM), a highly efficient deep learning model that achieves over 99% AUC in detecting lensed gravitational waves across the millihertz band by effectively capturing amplitude patterns spanning the wave-to-geometric optics transition.
The paper presents a static, spherically symmetric "Superball of Strings" solution in the low-energy limit of string theory, arguing that this horizonless fuzzball configuration describes generic BPS microstates that share the same asymptotic boundary conditions as a singular extremal black hole.
This paper investigates the tidal forces and Roche limits for various stellar objects within the Simpson--Visser spacetime, comparing static and infalling observers to determine how the black bounce regularization affects tidal disruption and the observability of these events for astrophysical black holes like M87* and Sgr A*.
This paper establishes a mathematical correspondence between the electric and magnetic components of the Weyl tensor in vacuum general relativity and the kinematics of a Cosserat elastic medium, thereby reinterpreting gravitational memory as topological dislocation charges within an effective, coarse-grained description of spacetime.
This paper introduces the orbital nodal phase, , as a pipeline-invariant quantity for accreting black hole timing that provides a robust Kerr-baseline diagnostic, isolates genuine metric sensitivity from trivial radius drift, and can be directly reconstructed from standard quasi-periodic oscillation frequencies.
This study analyzes the Pantheon+ Type Ia supernova sample and finds a residual hemispherical anisotropy in the deceleration parameter that persists even after standard CMB dipole corrections, suggesting the presence of a local bulk flow not fully captured by current peculiar velocity models which contributes to systematic uncertainties in low-redshift cosmology.