3841 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 generalizes the study of fermions coupled to light scalar fields in cosmological backgrounds with a constant equation of state, identifying distinct scaling and asymptotic regimes driven by approximate scale invariance to establish a foundation for analyzing perturbation growth and potential early structure formation.
This paper introduces a simple geometric "South-East" rule algorithm that determines which critical points contribute to the asymptotic evaluation of multidimensional integrals with exponential integrands, thereby eliminating the need for complex flow computations required by traditional Picard-Lefschetz methods and offering a systematic approach to identifying instanton contributions in real-time path integrals.
This paper develops a non-perturbative framework for curvaton dynamics beyond quadratic potentials, demonstrating how self-interactions modify non-Gaussianity to enable the formation of supermassive primordial black hole seeds consistent with COBE/FIRAS bounds and JWST observations of "Little Red Dots."
This paper constructs a new smooth 4-manifold invariant and an embedding into the hyperfinite II₁ factor that induces a Riemannian metric and "Hodge dynamics," demonstrating that the metric satisfies the Riemannian vacuum Einstein equation if and only if its curvature tensor lies in the fixed-point subalgebra of this dynamics, while also classifying these representations through the lens of thermal equilibrium states in algebraic quantum field theory.
This paper presents an analytically tractable hybrid Van der Waals-polytropic equation of state that successfully reproduces phase-transition signatures and predicts low-mass neutron star configurations within the range of 0.99 to 2.05 solar masses.
This paper derives novel constraints on scalar-tensor gravity theories by analyzing how spatial variations in the background scalar field affect neutrino masses, flavor oscillations, and supernova time delays, ultimately mapping these bounds onto popular screening mechanisms like Symmetron and Chameleon models.
This paper investigates how the tidal charge () arising from extra dimensions in the DMPR braneworld model significantly modifies strong-field gravitational lensing and quasinormal mode frequencies compared to standard Schwarzschild black holes, suggesting that DMPR$-$ variants exhibit stronger Lyapunov instability and could be constrained by Event Horizon Telescope observations of SgrA*.
This paper constructs an exact solution for an electrically charged distorted black hole using the Harrison transformation and analyzes its thermodynamic properties, particle dynamics, shadow characteristics, and quasinormal mode spectrum, revealing that while the electric charge expands the thermodynamic phase space and shifts perturbation frequencies, it does not alter the horizon location or induce superradiance.
This paper investigates the extended thermodynamics and Joule-Thomson expansion of four-dimensional charged AdS black holes in ModMax-dRGT massive gravity using Sharma-Mittal entropy, revealing how ModMax nonlinearities, non-extensive statistical parameters, and massive gravity distinctively govern the cooling domain, local stability, and global phase landscape respectively.
This paper presents a novel formula for computing conserved charges in arbitrary Lagrangian field theories using only algebra data, thereby enabling calculations in nonlocal models like string field theory where conventional derivative-based methods fail, while also successfully recovering known results for general relativity and Yang-Mills theory.