3875 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 demonstrates that the Husain-Kuchař model arises as the Carrollian limit of the Holst term within background-independent field theories and examines the resulting Carrollian symmetry features in its Hamiltonian formulation.
This paper investigates novel traversable wormhole solutions in Asymptotically Safe Gravity sourced by a Dekel-Zhao dark matter halo, demonstrating that quantum gravitational corrections can stabilize these structures and produce observable shadow radii consistent with Event Horizon Telescope data for Sgr A*.
This paper presents a new family of regular black hole solutions supported by a Letelier-Alencar string cloud and a rational Dagum-type distribution, analyzing their energy conditions, thermodynamic properties, and shadow constraints while demonstrating that Rényi non-extensive entropy stabilizes the system and eliminates standard phase transitions.
This paper presents a fully analytic, backreacted solution for the nonequilibrium evaporation of Schwarzschild–de Sitter black holes in two-dimensional dilaton gravity, demonstrating that irreversible heat flow from the black hole to the cosmological horizon drives monotonic entropy growth and naturally gives rise to entanglement islands and a Page curve within the anomaly-induced steady state.
This paper investigates the impact of positive and negative cosmological constants on the structural, equilibrium, and stability properties of dark energy stars in Finch-Skea spacetime, revealing that while the cosmological constant significantly influences compactness and stability, the model satisfies energy conditions for the Vela X-1 candidate within specific parameter ranges.
This paper demonstrates that the apparent freeze-out of black hole evaporation at a finite mass scale, induced by cubic curvature corrections in gravitational effective field theory, is not a physical prediction of a stable remnant but rather a dynamical signal marking the breakdown of the effective field theory when higher-order terms become unsuppressed and Planckian curvature is reached.
This paper conducts a comparative analysis of scalar field perturbations in non-commutative Schwarzschild spacetime under two distinct non-minimal curvature couplings, revealing their nearly identical fundamental quasi-normal mode spectra, contrasting stability behaviors at different multipolar numbers as coupling constants increase, and establishing an upper bound on the non-commutative parameter based on stability conditions.
This paper derives modified Friedmann equations from string T-duality-inspired zero-point length corrections and uses Bayesian analysis of diverse late-time cosmological data to constrain the deviation parameter to , demonstrating that current observations are consistent with the standard CDM model while highlighting the potential of future surveys to test quantum-gravity effects.
This paper demonstrates that in RegMax gravity, the coupling parameter governs a topological phase transition in charged black holes, where exceeding a critical threshold induces second-order criticality and negative Ruppeiner curvature at small scales, linking these exotic thermodynamic features to increased violations of classical energy conditions.
This paper derives the leading Cauchy-horizon flux coefficient in the reduced Polyakov model for spherically symmetric charged black holes, demonstrating that while specific stationary states can cancel the dominant quadratic divergence, generic physical prescriptions result in a nonzero flux that causes radial null curvature to diverge at the inner horizon.