2593 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 resolves the apparent contradiction between theory-independent no-go theorems and recent findings by explaining how classical gravity coupled to quantum matter can still induce entanglement, thereby underscoring the critical urgency of experimental investigations into low-energy quantum gravity effects.
This paper analyzes the consistency of deforming the Heisenberg algebra within constrained Hamiltonian systems to induce Generalized Uncertainty Principle theories on the reduced Poisson algebra, specifically examining scenarios involving rotational invariance and single Hamiltonian constraints relevant to General Relativity and cosmology.
This study investigates how pressure anisotropy, modeled via the Bowers-Liang framework and a quasi-local prescription, significantly enhances the maximum mass and compactness of neutron stars while revealing that internal curvature invariants tied to matter distribution are highly sensitive to anisotropy, unlike the more robust Weyl curvature.
The CHRONOS paper proposes a next-generation cryogenic ground-based gravitational-wave observatory utilizing quantum non-demolition speed-meter technology to bridge the sub-Hz frequency gap, thereby enabling unprecedented long-duration tracking of compact binaries and precise constraints on the stochastic gravitational-wave background to advance astrophysics and cosmology.
This paper develops and applies the Batalin-Fradkin-Vilkovisky (BFV) formalism to quantize off-diagonal solutions of Einstein's equations on Lorentz manifolds with nonholonomic fibrations, demonstrating that these solutions encode Hořava-Lifshitz configurations with anisotropic scaling and effective cosmological constants in the quasi-classical limit.
This paper develops a systematic effective field theory framework to calculate model-independent corrections to the quasinormal modes of Kerr black holes with arbitrary spin, revealing that near-extremality corrections exhibit an oscillatory dependence on the logarithm of a dimensionless temperature parameter, indicative of an underlying discrete-scale-invariant structure.
This paper proposes that assuming a thermal initial state for gauge fields during inflation, rather than the standard vacuum, introduces a dissipative boost that enhances primordial magnetic fields by up to , suggesting that embedding this mechanism in a warm inflation framework offers a promising path to inflationary magnetogenesis without requiring non-minimal couplings or modified electrodynamics.
Contrary to the prevailing belief that strong relativistic effects rapidly dissipate orbital energy to form prompt accretion disks, general relativistic hydrodynamic simulations reveal that even in strongly relativistic tidal disruption events, debris remains highly eccentric and extended with circularization occurring intrinsically slowly due to stream self-interactions that weaken relativistic shocks.
This paper investigates a multi-field model within Loop Quantum Cosmology using a polymerized spacetime framework to derive quantum-corrected Friedmann equations, numerically analyzing the transition from a quantum bounce to slow-roll inflation and assessing the model's viability through stability and dynamical systems analyses.
This paper demonstrates that within Einstein gravity coupled to nonlinear electrodynamics and a phantom scalar field, the Simpson-Visser regular black hole possesses a vanishing thermodynamic mass due to boundary contributions, yet remains thermodynamically less favorable than its singular counterpart when compared under identical thermal and magnetic conditions.