3841 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 investigates the energetics and tidal forces of the Harko-Kovacs-Lobo wormhole metric while introducing a novel probabilistic framework based on Tangherlini's Fresnel coefficients to demonstrate that external observers may identify the wormhole as a black hole with non-zero probability depending on their location.
This paper extends the Shapiro time delay formalism to spinning black holes in Lorentz symmetry-breaking Bumblebee gravity, demonstrating that Earth-bound signal propagation can exhibit a "gravitational time advancement" effect where measured distances become shorter than Euclidean predictions beyond a critical radius, while establishing strict upper bounds on these deviations based on Cassini spacecraft data.
This paper demonstrates that the Weak Gravity Conjecture arises from boundary Conformal Field Theory calculations for charged black holes in dRGT massive gravity and Einstein-ModMax non-linear electrodynamics, deriving specific charge-to-mass bounds that either universally saturate or depend on non-linearity parameters, while also analyzing how relaxing assumptions like exact extremality and minimal coupling reintroduces model-specific dependencies into these bounds.
This paper reformulates Brans-Dicke gravity using the Herglotz variational principle to derive an exact, regular black hole solution with scalar hair for and a vanishing potential, demonstrating a new mechanism to evade standard no-hair theorems.
This paper presents numerical simulations of gravitational waves propagating through various dark matter halo profiles, revealing significant wave optics effects such as deviations from null geodesics and potential flipping that depend on the lens's mass and density distribution, with implications for future detection by gravitational wave observatories and Pulsar Timing Arrays.
This paper introduces a near-identity averaging transformation applied to eccentric effective-one-body dynamics that eliminates fast orbital oscillations to reduce inspiral computational costs by up to two orders of magnitude while maintaining high waveform accuracy for next-generation gravitational-wave detectors.
This paper establishes a connection between the Poisson bracket of Lagrangian field theory and algebras by demonstrating that a proposed symplectic structure yields the Peierls formula, interpreting the inverse relation between these structures via homological algebra, and applying these concepts to the complexities of -adic string theory.
This paper presents novel analytic solutions for multi-field inflation models with constant turns, deriving criteria for the exponential amplification of curvature perturbations to produce primordial black holes and demonstrating how field-space torsion in a three-field scenario yields distinct observables compared to two-field models.
This paper presents a consistent canonical quantization of General Relativity within a BRST-invariant framework around the Minkowski vacuum, demonstrating that classical spacetime geometries emerge as coherent states where the vanishing Hamiltonian constraint is realized as an expectation value, thereby enabling non-trivial time evolution for correlation functions and providing motivation for spontaneously broken supersymmetry.
This paper utilizes a Modified Teukolsky framework to analyze equatorial eccentric extreme mass-ratio inspirals around braneworld black holes, demonstrating that while the tidal charge constraints align with previous Dudley-Finley approximation results, the two formulations diverge at higher eccentricities, thereby validating the utility of both the approximation and the more rigorous framework for future gravitational wave tests of extra dimensions.