3884 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 proposes a novel non-thermal dark matter production mechanism driven by curvature-induced tachyonic instabilities of a spectator scalar field coupled to the Gauss-Bonnet invariant, which triggers explosive particle creation after inflation and successfully reproduces the observed dark matter relic density across a wide range of masses and inflationary scales.
This paper derives general relativistic Gaussian equations for osculating orbital elements in Schwarzschild space-time under arbitrary perturbing forces, demonstrating their application to Kerr and -metric space-times while recovering the known Lense-Thirring precession in the post-Newtonian limit.
This paper argues that despite the remarkable agreement between observational data from collaborations like LIGO-Virgo-KAGRA and the Event Horizon Telescope and Kerr black hole predictions, general relativity fundamentally imposes limits that prevent any observational data from conclusively confirming the existence of black holes, leaving them only as candidates rather than proven entities.
This paper derives an exact electrically charged black hole solution in higher-order curvature gravity coupled with ModMax electrodynamics and quintessence dark energy, demonstrating that while thermodynamic geometry confirms phase transition consistency, quintessence and curvature corrections significantly enlarge the black hole shadow radius, whereas electric charge reduces it.
This paper demonstrates that background-inert perturbative couplings in coincident gravity create a degeneracy between the primordial amplitude and the growth factor, leading to unphysically high values that can be resolved by imposing Planck priors, a constraint that ultimately penalizes the extended models with information criteria despite a weak statistical preference for the CDM++ variant.
This paper constructs and analyzes new families of regular, asymptotically flat solitons in the Einstein–Proca model, including magnetic and hybrid multipole configurations that are dynamically unstable and tend to decay into previously known electric-sector Proca stars or collapse into black holes.
This paper distinguishes between fully gravitational and partially frozen Hartle-Hawking wave functions in AdS and dS spacetimes, demonstrating that the former acquires a nontrivial one-loop phase due to boundary fluctuations while the latter remains real and positive, thereby establishing that the phase problem is controlled by the dynamical nature of the gravitational path integral.
This paper investigates the quantum mechanics of bosonic multi-matrix Lagrangians, specifically focusing on three matrix models, to derive the effective Hamiltonian of the collective field and analyze its vacuum solution and stability.
This paper proposes a laboratory-based graviton laser that overcomes the challenge of reflecting gravitons by utilizing the Gertsenshtein effect to convert them into photons for reflection and back into gravitons, thereby enabling arbitrarily long path lengths through a lasing medium.
This paper characterizes the "natural" polynomials that exactly tridiagonalize the Teukolsky radial equation for Schwarzschild and Kerr black holes as complex-valued Pollaczek-Jacobi polynomials, detailing their analytic properties and highlighting a unique recurrence relation peak specific to the Schwarzschild case.