3875 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 presents a new exact solution to Einstein's field equations that unifies the Kerr black hole with FLRW cosmology, predicting a stationary mass with a contracting ergosphere and event horizon relative to the expanding universe while generalizing the McVittie metric to rotating masses.
This paper establishes a comprehensive theoretical framework for open quantum systems coupled to scale-invariant "unparticle" environments, deriving exact non-Markovian dynamics and identifying a rich phase structure of decoherence and thermalization transitions governed by the scaling dimension , with applications ranging from critical quantum magnets and inflationary cosmology to high-energy astrophysical neutrinos.
Through long-term numerical-relativity simulations, this study demonstrates that isolated neutron stars with initial mixed magnetic fields dynamically relax into stable configurations where the toroidal component contributes less than 10% of the total magnetic energy, a process driven by Tayler instabilities and gravitational-wave emission that constrains the long-term evolution of pulsar and magnetar magnetic fields.
This paper demonstrates that collapsing domain walls generically develop robust cuspidal edge and vertex singularities, a phenomenon predicted by Nambu-Goto and eikonal approximations and confirmed by full field theory simulations, which has significant implications for localized energy density and potential phenomenological effects.
This paper presents a GPU-accelerated, 1000-fold faster version of the gwcosmo pipeline that enables scalable, population-level dark-siren cosmological inference for future large-scale gravitational-wave catalogues within hours.
This paper proposes a method using third-generation gravitational-wave detectors (Cosmic Explorer and Einstein Telescope) to measure the fractional contribution of binary neutron star mergers to cosmic r-process nucleosynthesis by analyzing the redshift-dependent correlation between merger event rates and r-process abundances, achieving a precision of approximately 5–6% for both multi-messenger "bright-sirens" and "dark-sirens" scenarios.
This paper derives a closed expression for the gravitational angular momentum of axial perturbations in a Bardeen regular black hole using the teleparallel equivalent of general relativity, revealing a multipolar selection rule where the angular momentum vanishes for odd multipole indices but is nonzero for even ones.
This paper investigates the dynamical and thermodynamical stability of a spherical thin shell in Einstein-Born-Infeld gravity under extremally charged conditions, deriving stability criteria and demonstrating that the shell's entropy depends solely on its gravitational radius despite the presence of non-zero pressure.
This paper constructs a -dimensional dissipative non-Abelian colored fluid by performing a Scherk-Schwarz dimensional reduction of a neutral viscous conformal fluid on an -dimensional unimodular group manifold, deriving the resulting hydrodynamic equations, transport coefficients, and entropy current to provide a toy model for non-Abelian dissipative hydrodynamics such as quark-gluon plasma.
This paper demonstrates that employing the quantum group to model rotational symmetry in spin- systems leads to non-commuting probability operators and an associated uncertainty principle, thereby establishing a framework of "indefinite probabilities" that fundamentally prevents observers from sharply measuring their relative orientation.