2532 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 study evaluates the impact of the unresolved compact binary coalescence background on continuous gravitational wave searches in the Einstein Telescope, finding that it acts as an additional noise source that degrades detection sensitivity by approximately 7–10% around 7 Hz.
This paper establishes a sharp lower bound for the mass of ALE and ALF toric 4-manifolds with nonnegative scalar curvature in terms of corresponding gravitational instantons and conical defects, proving that equality holds only when the manifold is Ricci flat and identical to the instanton, thereby offering a refined positive mass theorem and a variational characterization for these geometries.
This paper derives the curvature expansion for the heat kernel trace and one-loop effective action of a non-vacuum quantum state in a quasi-thermal, non-static Euclidean gravitational background by introducing a covariant vector field that generalizes the Killing vector to inhomogeneous metrics, thereby establishing a locally rescaled effective temperature and analyzing the high-temperature asymptotics of nonlocal formfactors for potential cosmological applications.
This paper proposes that ordered atomic arrays can exhibit a novel form of gravitational wave-induced superradiance, where spacetime geometry mediates long-range dissipative coupling to produce intense, delayed photon emission, thereby establishing engineered quantum many-body systems as a new platform for probing the intersection of general relativity and quantum mechanics.
This paper investigates the scaling solutions and critical properties of an scalar field coupled to gravity in three and four dimensions using a proper-time functional renormalization group framework, confirming most qualitative and quantitative results from previous effective average action studies while highlighting specific differences in finite and large limits depending on the improvement scheme.
This paper proposes a vacuum decay model where primordial curvature perturbations arise from stochastic thermal noise rather than inflaton quantum fluctuations, naturally solving the horizon and flatness problems while predicting a zero tensor-to-scalar ratio and observationally viable Gaussian spectra.
This paper validates a regularization prescription for the Weyl double copy by demonstrating its consistency with the Kerr-Schild formulation across three distinct Lifshitz black hole examples that previously posed challenges for reconciling the two classical double copy approaches.
This paper demonstrates that double trace deformations between the boundaries of an AdS black brane induce gravitational shear and sound channel perturbations that violate the Averaged Null Energy Condition, thereby creating a traversable wormhole whose duration and decay behavior depend on the sound speed and coupling configurations.
This paper establishes quasi-universal relations linking the trace anomaly profile in neutron stars to their macroscopic properties, utilizing observational data from specific pulsars and multimessenger constraints to estimate the central trace anomaly of a canonical neutron star.
This paper proposes that five-dimensional primordial rotating black holes, whose lifetimes are significantly extended by the "dark dimension" scenario and the memory burden effect, can survive to the present day and potentially account for all of the universe's dark matter.