2489 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.
Using worldline effective field theory, this paper presents the first gauge-invariant computation of the long-wavelength graviton photoproduction amplitude by a Kerr-Newman black hole through , demonstrating that consistent electromagnetic interactions preserve spin gauge invariance and that the relevant Wilson coefficients are uniquely fixed by matching to the Kerr-Newman multipole moments.
This paper investigates bound states within the Lee model of complex ghosts using canonical operator formalism, demonstrating that such states can be formed despite nontrivial complex delta functions, and briefly discusses the implications for restoring unitarity in quadratic gravity.
This paper establishes a finite-energy scattering theory for source-free Maxwell fields on slowly rotating, weakly charged Kerr-Newman black holes by decomposing the field into stationary and radiative components and proving uniform boundedness, integrated local energy decay, and asymptotic completeness for the radiative sector through a combination of geometric and analytic techniques.
This paper proposes a non-Markovian extension of the semiclassical Wheeler-DeWitt framework where causal memory kernels induce effective fractional time evolution, leading to a characteristic correction in the primordial power spectrum that primarily impacts high- CMB anisotropies and offers potential observational signatures for nonlocal quantum gravitational dynamics.
This study employs a general relativistic framework with anisotropic matter to analyze the rotation curve and stellar photometry of galaxy NGC 7331, demonstrating that a physically viable model can be constructed which confirms the dominance of dark matter while offering a consistent alternative to standard dark matter profiles.
This study demonstrates that dark matter spikes around supermassive black holes, such as at the Galactic Center, remain largely intact against gravitational perturbations from nuclear stars and past stellar-mass black hole mergers, with density reductions being negligible at the small radii relevant for gravitational wave signal generation.
This paper employs catastrophe theory to demonstrate that the transition from inspiral to plunge for extreme mass-ratio inspirals on inclined Kerr orbits is universally governed by the tritronquée solution of the Painlevé I equation, with equatorial and inclined cases corresponding to fold and cusp catastrophes, respectively.
This paper demonstrates that a two-dimensional effective dilaton gravity theory derived from four-dimensional Einstein-Maxwell theory successfully reproduces the semiclassical thermodynamic phase structure of charged AdS black holes, while showing that one-loop Kaluza-Klein photon corrections only induce constant shifts in entropy and charge parameters without qualitatively altering this phase structure.
This paper introduces a fast semianalytic method using fitting factors to estimate the sensitivity of gravitational-wave searches to physical effects not explicitly modeled in template banks, such as spin, eccentricity, and deviations from general relativity.
This paper establishes a theory-agnostic uniqueness theorem for the Kerr solution by demonstrating that, under specific symmetry and asymptotic conditions, the Kerr spacetime is unique and singularities remain unavoidable even without assuming the validity of Einstein's equations.