3151 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 demonstrates that the proposed Lunar Gravitational Wave Antenna (LGWA) could detect and localize approximately 30 Galactic and 10 extragalactic double white dwarf systems over a decade, offering unique insights into Type Ia supernova progenitors and dense matter physics.
This paper demonstrates that optical ion clocks can probe quantum signatures of proper time, including vacuum-induced and squeezing-related second-order Doppler shifts and motion-clock entanglement, thereby enabling experiments where a quantum description of relativistic time evolution becomes necessary beyond classical dynamics.
This paper establishes a unique off-shell conformal gauge theory for vector-spinors that resolves previous claims of classical inconsistency and Velo-Zwanziger instability, revealing a massive spin-3/2 particle coupled to a negative-norm spin-1/2 state while yielding a negative conformal anomaly consistent with the Hofman-Maldacena bound.
This paper proposes a novel quantity derived from gravitational wave amplitude and frequency derivatives to extract dark matter density profiles around black holes, enabling multi-wavelength observations to probe dark sector properties and constrain primordial black hole origins.
This paper investigates the local characteristics of the Fulling-Rindler vacuum for a massive Dirac field in -dimensional spacetime with a uniformly accelerating mirror, decomposing the fermion condensate and energy-momentum tensor into boundary-free and boundary-induced contributions to reveal their distinct behaviors near the Rindler horizon and the mirror, as well as their contrasting properties compared to the Minkowski vacuum.
This paper constructs self-gravitating, singularity-free baryonic tube solitons in an $SU(N)$ Einstein non-linear sigma model coupled to -mesons, demonstrating that increasing the number of flavors enhances physical predictions by reducing binding energy despite increasing total energy.
This paper argues that the Kerr-Schild and twistorial double copy prescriptions are equivalent for a broad class of self-dual vacuum solutions, a claim demonstrated through elementary null Lorentz transformations and illustrated with the self-dual Kerr-Taub-NUT spacetime.
This paper constructs the metric-affine analogue of quadratic degenerate higher-order scalar-tensor (DHOST) theories, demonstrating that imposing standard degeneracy conditions and the gravitational wave speed constraint restricts the theory to a specific Palatini Class Ia branch characterized by a single free function.
This paper demonstrates that in spherically symmetric loop quantum gravity, the quantized ingoing and outgoing null expansion operators are self-adjoint with a shared continuous spectrum but distinct isolated eigenvalues, offering new insights into singularity avoidance and the definition of quantum horizons.
This paper derives a gluing formula for the Euclidean path integral of higher spin gravity on by expressing it in terms of a boundary theory on a splitting hypersurface, identifying this boundary theory as the invariant sector of free scalars for even-spin spectra and an superconformal theory for mixed bosonic-fermionic spectra.