3826 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 concludes that gravitational-wave lensing by intermediate-mass black holes within globular clusters is highly unlikely, with relative rates as low as 1/10,000, thereby disfavoring such an explanation for the GW231123 event and suggesting lensed waves are instead a more promising probe for dark matter substructures and primordial black holes.
This paper demonstrates that a specific scale-invariant, dipole-conserving fracton Hamiltonian naturally evolves toward stable fixed points that reproduce the key features of a flat, matter-dominated cosmology—including Einstein-de Sitter expansion, homogeneous particle distributions, and a bidirectional arrow of time—without requiring fine-tuning.
This paper demonstrates that the shape and compactness of a dark matter halo surrounding a black hole significantly alter its gravitational ringdown frequencies and tidal Love numbers, providing a potential observational method to distinguish environmental effects from intrinsic deviations in black hole geometry.
This paper demonstrates that within the KMOC formalism, coherent-state dressings of massive particles correspond to large gauge or BMS transformations, which induce universal shifts in impact parameters and clarify the frame dependence of radiated angular momentum through a mechanism driven by soft factorization rather than local symmetry.
This paper presents a concrete local construction of incidence relations for self-dual black hole spacetimes (specifically Eguchi-Hanson, self-dual Taub-NUT, and self-dual Plebanski-Demianski) within Kerr-Schild coordinates by applying the Dunajski-Mason recursion to Plebanski's second heavenly equation, yielding closed-form formulae and demonstrating a linear dependence on gravitational coupling for the Taub-NUT solution.
This paper demonstrates that causal-diamond thermalization, induced by an observer's finite lifetime, uniquely enhances the nonseparability of fermionic states while degrading bosonic nonseparability, revealing that particle statistics, entanglement structure, and observer lifetime jointly determine the robustness of multipartite quantum correlations in relativistic spacetimes.
This paper utilizes the functional renormalization group to systematically investigate the scale dependence of the effective gravitational constant, revealing that while its qualitative behavior is robust against electromagnetic interactions, its quantitative constraints are strictly limited by observational data and the feasibility of physical scales.
This paper challenges the assumption that the absence of absolute time necessitates a stationary global quantum state by proposing a time-reparameterisation invariant evolution law that reproduces Schrödinger trajectories without fixing their speed, thereby recovering standard predictions via internal clocks while maintaining a non-stationary global state.
This paper investigates the thermodynamics of the apparent horizon in an exponential gravity model, demonstrating that the horizon dynamics admits an equilibrium thermodynamic description with entropy corrections that recover the Bekenstein–Hawking area law in the limit of vanishing parameters, while identifying specific parameter ranges that satisfy or violate the generalized second law of thermodynamics.
This paper constructs and compares two charged rotating extensions of the Kerr--Levi-Civita geometry within Einstein--Maxwell and low-energy heterotic string theories, demonstrating that while both possess regular local horizons, the Einstein--Maxwell branch remains free of closed timelike curves in its exterior whereas the heterotic branch terminates at a genuine curvature singularity.