3805 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 establishes a non-perturbative classical double copy correspondence between quartic biadjoint scalar theory, complexified Yang-Mills theory, and four-dimensional general relativity with conformally flat metrics, demonstrating that all three theories share a common scalar seed and identical nonlinear equations of motion under specific ansatz restrictions.
This paper presents a mathematically rigorous course on classical and quantum entropies, deriving them from probability theory, large deviation principles, and statistical hypothesis testing, while utilizing advanced frameworks like von Neumann algebras and modular theory to define relative and dynamical entropies for theoretical physicists.
This paper proposes a modified classical double-copy formalism that derives all vacuum solutions of -dimensional quasitopological gravity from an auxiliary non-linear electrodynamics in flat -dimensional spacetime, thereby providing a unified framework to interpret higher-curvature gravitational interactions as non-linear gauge dynamics and generating regular black hole solutions.
This paper demonstrates that Starobinsky's stochastic formalism, when applied to a specific component of the 1-loop effective potential, successfully captures the first sub-leading logarithmic corrections in scalar potential models on de Sitter space, a result verified at the 2-loop level for a massless, minimally coupled scalar with quartic self-interaction.
This paper presents a fully discrete, non-perturbative formulation of Jackiw-Teitelboim gravity as an BF theory, demonstrating that all physical information resides at the boundary through the derivation of asymptotic symmetries, the establishment of a continuum OPE dictionary, and the reproduction of Bekenstein-Hawking entropy via gauge-invariant holonomy data without invoking an explicit Schwarzian action.
The paper refutes the assumption that exponentials of the d'Alembertian are positive-definite by demonstrating that, even in a simple 1-dimensional system, such operators possess an infinite kernel of unstable solutions that allow for arbitrary initial data specification over any finite interval.
This paper investigates how pinned superfluid vortices in a spinning neutron star's crust generate a "Magnus mountain" capable of producing significant mass quadrupoles (up to ), thereby acting as a promising source of continuous gravitational waves detectable by current and future observatories.
This paper derives the thermodynamic and Friedmann dynamics of a spatially flat McVittie spacetime within Gravity's Rainbow, demonstrating observational viability by constraining a low-energy rainbow deformation parameter using cosmic-chronometer and Pantheon+ data to yield consistent cosmological parameters.
This paper demonstrates that replacing the unphysical negative surface layer of a sharp timelike junction with a smooth, finite-width underdensity allows for the construction of a positive-energy, constraint-satisfying initial-data embedding of a virialized halo within a Lambda-FLRW cosmology.
This paper presents a stability analysis of a rotating, self-gravitating dark-fluid model with a polytropic equation of state, revealing that its self-similar solution is dynamically robust due to having only one weakly unstable direction amidst three contracting directions in phase space.