3949 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 Horizon Brightened Acceleration Radiation (HBAR) using derivative coupling between atoms and field momentum to resolve infrared divergences, revealing that point-like detectors exhibit frequency-independent transition probabilities due to local gravitational effects and that finite-size detectors may induce non-equilibrium thermodynamic states.
This paper demonstrates how the Gravity Spy project leverages Zooniverse volunteers to identify new LIGO glitch classes, revealing their connection to detector states and highlighting the challenges they pose for machine-learning classification.
The paper summarizes the GR-Amaldi 2025 Early Career Workshop, a three-day event designed to unite early-career researchers in gravitational physics through scientific overviews, skill development, and networking to foster a cohesive and collaborative community.
The paper argues that while stationary black holes adhere to standard Bekenstein-Hawking thermodynamics, the evolving universe fundamentally requires a "teleodynamic" framework driven by horizon memory accumulation, thereby establishing a distinct thermodynamic regime for cosmology that challenges the extrapolation of black hole thermodynamics to the universe.
This paper analyzes curvature invariants across a broad ensemble of neutron star equations of state, revealing that negative Ricci scalars are surprisingly common in massive, compact stars, while also refining the quasi-universal mass relation and determining the conditions under which the trace anomaly vanishes or becomes negative.
This paper demonstrates that the gauge dependence of one-graviton-loop corrections to the effective field equation of a massless, minimally coupled scalar in de Sitter space cancels out when contributions from all diagram classes, including one-loop corrections to external mode functions, are consistently collected, thereby supporting the construction of gauge-independent cosmological quantum-gravitational observables.
This paper proposes a modified theory of gravity inspired by the van der Waals equation of state, which treats spacetime as a non-ideal thermodynamic system to derive field equations with a dynamical gravitational coupling that naturally resolves the initial Big Bang singularity and yields non-singular black hole solutions.
This paper investigates charged massive scalar field perturbations on the Kerr-EMDA black hole background by deriving exact analytical solutions in terms of confluent Heun functions to determine a mass-dependent resonant frequency spectrum, a parameter-dependent entropy quantization that diverges at extremality, and the first closed-form greybody factor for this geometry, thereby revealing how electromagnetic coupling and dilaton deformation fundamentally alter the black hole's wave scattering and thermodynamic properties compared to standard Kerr and Kerr-Newman cases.
This paper demonstrates that the trapped interiors of black holes provide an exact, time-dependent framework for the classical double copy, proving that regular solutions like the Bardeen black hole yield finite single-copy gauge fields that satisfy standard energy conditions even when the corresponding gravitational core violates them.
This paper presents [2,2] two-point Padé approximants and a simpler quadratic approximation to accurately model the deflection angle of light in the Schwarzschild metric across the full range of impact parameters greater than the critical value, bridging the gap between weak-field and strong-field regimes.