3151 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 investigates cosmic expansion within the linear gravity framework using an affine equation of state, constraining the model parameter via Bayesian analysis of Cosmic Chronometer, Pantheon+, and DESI BAO data, and demonstrating that the resulting universe age is consistent with Planck observations.
This paper proposes a non-equilibrium framework for thermodynamicized black holes that unifies entropy functionals, pole-based horizon temperatures, and topological residue classifications to extend standard equilibrium relations to dynamically driven systems, specifically demonstrating its application to Kerr-Newman black holes in gravity.
This paper derives exact expressions for the factors in the Hadamard form of the retarded Green function for the Teukolsky equation on Schwarzschild spacetime by utilizing a conformal direct-product metric to obtain a separable direct part and its multipolar modes, ultimately providing an improved representation of the Green function near coincidence for gravitational perturbations.
This paper investigates the late-time evolution of an anisotropic Bianchi-I universe containing radiation and electromagnetic fields within asymptotically safe gravity, revealing that quantum effects soften anisotropy in radiation-dominated scenarios while the presence of a cosmological constant ultimately drives the universe toward an isotropic de Sitter phase, whereas its absence leads to a persistent Kasner-type anisotropic regime.
This paper presents a unified relativistic perturbation framework to calculate frequency shifts in gravitational waves emitted by axion clouds around rotating black holes, accounting for self-interaction effects that populate multiple superradiant modes and revising the treatment of self-gravity to improve predictions for next-generation observations.
This paper extends the Landau theory analysis of scalarization phase transitions in neutron stars to include general linear and quadratic couplings and stellar rotation, demonstrating that the former reveals overlooked solution branches while the latter primarily shifts transition masses to higher values without altering the qualitative phase structure.
This paper presents a closed-form analytical solution for the gravitational collapse of a perfect fluid and a spatially homogeneous scalar field with an extended Higgs-type potential within a Chiellini-integrable framework, revealing an asymptotic collapse scenario that may violate the Null Energy Condition and exhibit multiple apparent horizon formations depending on the parameter space.
This study demonstrates that Myrzakulov-type gravity with a Chaplygin gas equation of state can generate a stable, non-singular cosmic bounce driven by negative quadratic trace coupling () that violates the Null Energy Condition through geometric repulsion, thereby offering a viable alternative to the Big Bang singularity while satisfying causality and stability constraints.
This paper constructs symmetric asymptotically AdS black brane solutions with infinite curvature corrections, demonstrating that while these corrections modify the approach to the singularity without resolving it, a non-trivial dilaton can dynamically generate a negative cosmological constant at small coupling to potentially explain asymptotic freedom in a string dual of QCD.
This study demonstrates that the viability of Tsallis holographic dark energy models in explaining cosmic structure formation critically depends on the choice of infrared cutoff, with future event horizon-based models successfully fitting observational data while particle horizon-based models fail to reproduce the observed growth of structure.