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 extends the formalism of scale-invariant symmetry reduction to singular Lagrangian systems of both particles and fields by utilizing the De Donder-Weyl multisymplectic framework to construct dynamically equivalent frictional theories, with applications to physical models and implications for classical General Relativity.
This article proposes a mixed Linear-Quadratic-Gaussian and control framework to establish benchmark cost functions and compute optimal, robust feedback strategies that minimize bilinear noise in gravitational wave detectors, thereby improving current observatories and guiding the design of future facilities.
This paper generalizes the Antonini-Sasieta-Swingle construction of 3D holographic cosmologies by introducing a gluing procedure that adds arbitrary AdS tubes to heavy-particle wormhole solutions, enabling the creation of homogeneous and isotropic models while identifying conditions under which these cosmological saddles dominate the Euclidean path integral over alternative configurations.
This paper investigates static and dynamical spherically symmetric black holes within the Gravity from Entropy framework, demonstrating that the theory yields corrections to the Schwarzschild metric, aligns with current astrophysical observations, and predicts both a standard Hawking-like mass loss at intermediate scales and a constant background evaporation rate for large black holes due to inherent entropic leakage.
This paper numerically demonstrates that in Palatini modified gravity with a non-minimal scalar-Ricci coupling, oscillons form during the preheating phase of inflation, leading to a prolonged period of oscillon domination and the generation of ultra-high frequency primordial gravitational waves detectable by future experiments.
This paper presents a general algorithm for deriving series solutions to the Tolman-Oppenheimer-Volkoff equations based on the equation of state, utilizing Padé approximants to obtain closed-form approximations for stellar mass and radius while extending the formalism to piecewise equations of state.
This paper establishes a correspondence between corrected black hole entropy and the metric function to calculate resulting photon sphere and shadow characteristics, which are then constrained by Event Horizon Telescope observations of Sgr A* to test deviations from the Bekenstein-Hawking area law.
This paper applies exact WKB analysis and Borel–Padé resummation of quantum periods to derive high-precision quantization conditions that accurately reproduce the quasinormal mode frequencies of extremal Reissner–Nordström and Kerr black holes.
This study demonstrates through 23 long-term axisymmetric simulations that black hole supernovae are not limited to the most massive progenitors but occur systematically across a wide range of stellar masses and compactnesses, resulting in diverse explosion energies and black hole masses that cannot be fully predicted by carbon-oxygen core mass alone.
This paper reexamines cosmic inflation within extended General Relativity by employing a quantum-deformed, perturbatively and tensorially structured conformal metric to derive a consistent set of analytical formulas for inflationary observables, thereby offering a controlled phenomenological framework for understanding quantum-gravitational effects in the early Universe while preserving classical limits.