3805 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 derives a simplified, high-precision formula for light deflection by solar system bodies with finite source and observer distances, incorporating full time-dependent mass and spin multipoles to achieve sub-micro-arcsecond astrometric accuracy.
This paper constructs a consistent effective metric for bound-state dynamics within the effective-one-body framework at the third-post-Minkowskian order by establishing a correspondence via the radial action variable and verifying it with the precession angle, ultimately adopting an isotropic gauge with a Schwarzschild-like parametrization to determine the metric coefficients.
This thesis investigates the cosmological consequences of relaxing the Cosmological Principle by reviewing and applying various inhomogeneous, anisotropic, and tilted universe models to existing observational data, such as supernovae and peculiar velocities, in response to growing tensions within the standard CDM framework.
This paper demonstrates that eccentric extreme-mass-ratio inspirals observed by LISA can effectively constrain dark-matter spike profiles through Bayesian and Fisher-matrix analyses, revealing that moderate orbital eccentricity optimizes parameter recovery by leveraging higher harmonics to break degeneracies between eccentricity and spike slope.
This paper investigates the equilibrium configuration and linear perturbations of a Lorentz-violating bumblebee vector field on a fixed Schwarzschild background, deriving parameter bounds for real and finite solutions while characterizing the behavior of monopole and multipole perturbations near the event horizon and at spatial infinity.
This study utilizes fully general-relativistic simulations to demonstrate that binary neutron star mergers produce neutrino radiation dominated by a quadrupolar geometry with persistent polar enhancement and equatorial suppression, exhibiting coherent azimuthal modulations linked to differential rotation that subsequently drive latitude-dependent variations in the electron fraction of the ejecta.
This paper constructs a charged Oppenheimer-Snyder-like collapse model in scale-dependent gravity, demonstrating that electric charge qualitatively alters the horizon and singular structure of the exterior geometry, potentially leading to horizon shielding in the negative-pole regime.
This paper investigates higher-dimensional gravitational collapse of a dust sphere with loop quantum gravity corrections, demonstrating that evaporation halts at a finite remnant with WGC-like behavior, deriving closed-form expressions for remnant properties across dimensions, identifying a universal invariant product of thermodynamic quantities, and calculating the corresponding Eddington luminosity for Bondi accretion.
This paper establishes the perturbative stability of the fuzzy-sphere black-hole horizon in large- matrix quantum mechanics by demonstrating that quantum corrections stabilize classically unstable modes through a non-negative Hessian structure, with a critical crossover regime at where quantum and classical effects become comparable.
This paper investigates the exceptional lines formed by the degeneracy of quasinormal modes in a Reissner-Nordström-de Sitter black hole surrounded by a thin matter shell, demonstrating that the spectral response near these lines is intrinsically directional and requires a specialized parametrization to account for the nonanalytic square-root splitting behavior.