3841 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 employs the Iyer-Wald formalism within modified gravity to demonstrate that the generalized mass-to-horizon entropy can be reconstructed from a power-law Lagrangian, offering potential insights into cosmological applications and the thermodynamic stability of Schwarzschild black holes.
This paper reinterprets the convergence region of Schwarzschild quasinormal mode expansions by introducing a radial mirror scattering framework that maps the problem to a two-component half-line system, thereby providing a spectral explanation for the second lightcone distance and drawing a parallel to AdS boundary-bouncing geodesics.
This paper presents a framework for iteratively transforming black hole perturbation theory on a Kerr background to the Bondi--Sachs gauge and fixing the BMS frame, thereby resolving infrared divergences in gravitational self-force calculations and naturally incorporating memory effects essential for next-generation gravitational wave detection.
This paper presents the classical and quantum formulation of non-diagonal Bianchi models within Loop Quantum Cosmology, demonstrating that the kinematical Hilbert space and geometrical operators for the non-diagonal Bianchi I model retain features similar to those of the diagonal description.
This paper resolves the long-standing debate regarding the implementation of Loop Quantum Gravity in homogeneous cosmology by demonstrating that a non-vanishing Gauss constraint can be recast into three Abelian constraints using suitable variables, thereby justifying the absence of full SU(2) symmetry in Loop Quantum Cosmology.
This paper presents new exact solutions for rotating black holes in gravity with imperfect fluid and via Lorentz boosts, demonstrating that both classes are holographically dual to hidden conformal field theories and proposing a conjecture that the presence of matter distinguishes these black holes through higher dual CFT temperatures and mode numbers compared to vacuum solutions.
This paper demonstrates that the geometrical optics approximation is insufficient for describing particle spin in spherical symmetric spacetimes, derives a parallel-transport-based precession equation applicable to both massless and massive particles, and reveals that while massless particles always undergo spin reversal upon backward scattering, massive particle precession in Schwarzschild and Reissner-Nordström spacetimes depends distinctively on the deflection angle and black hole charge, respectively.
This paper investigates gravitational wave emissions from periodic orbits around Einstein-Æther black holes, revealing that the Æther field significantly modifies waveforms and that higher zoom numbers in zoom-whirl orbital behaviors produce increasingly intricate waveform substructures detectable by future space-based observatories.
This paper proposes a covariant, one-parameter family of modified gravity theories that suppress intrinsic curvature through auxiliary fields or non-minimal scalar couplings, successfully reproducing standard relativistic solutions while predicting a modified gravitational wave speed and providing a distinct UV completion of Carroll gravity.
This paper establishes that the Hawking quasi-local energy satisfies nonnegativity and rigidity properties under the dominant energy condition when evaluated on area-constrained critical surfaces, providing the first such theorems for the fully dynamical case and extending these results to charged, cosmological constant, and higher-dimensional variants in the time-symmetric setting.