2677 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 constructs static, spherically symmetric, charged traversable wormhole solutions supported by negative-energy null dust and proposes a dynamical formation scenario where a black hole evolves into a wormhole through sequential transitions mediated by impulsive null shells, with the resulting throat radius determined by the initial black hole's and injected shell's mass and charge.
This paper investigates how axion hair coupled to the electromagnetic field breaks electric-magnetic duality in charged black holes, altering the greybody factors for spin-0 and spin-1 particles in a way that distinguishes them from Reissner-Nordström solutions and offers potential observational signatures for axions and magnetic monopoles.
This paper demonstrates that while far-zone environmental perturbations have minimal impact on Hawking radiation and grey-body factors unless they create a significant secondary potential barrier, near-horizon deformations substantially alter the Hawking spectrum, particularly in the low-frequency regime.
This paper investigates the photon rings and shadows of Kerr black holes in a swirling universe, revealing that spin-spin interactions break hemispherical symmetry to create two unstable light rings and a unique "light point" where the ergoregions merge, ultimately resulting in twisted shadow structures.
This study investigates the shadow morphology of a rotating wormhole in a plasma environment using the Hamilton-Jacobi formalism, deriving constraints on its geometric and plasma parameters based on recent observational bounds on shadow radius deviations and identifying distinct optical features that differentiate it from Kerr black holes.
This paper derives the second-and-a-half post-Newtonian order dynamics of compact binaries on quasi-elliptic orbits, incorporating finite-size tidal effects through a quasi-Keplerian parametrization and providing explicit expressions for orbital evolution up to the fourteenth order in eccentricity.
This paper explores the ambiguous origins and multifaceted meanings of the term "Big Bang"—coined by Fred Hoyle to mock a theory he opposed—by analyzing the tension between language and scientific reality, comparing Hoyle's Steady State model with modern inflation cosmology, and examining how the label is currently applied to diverse concepts ranging from the initial singularity to popular culture.
This paper computes gravitational wave fluxes and waveforms for eccentric compact binaries with adiabatic tidal interactions at the 2.5PN order, deriving secular orbital evolution equations and demonstrating that eccentricity-induced tidal dephasing could be detectable in future gravitational wave observations.
This paper assesses the feasibility of subtracting astrophysical foregrounds from compact binary populations, inferred from LIGO-Virgo-KAGRA data, to enable DECIGO's detection of the primordial stochastic gravitational wave background, concluding that the Cutler & Harms projection scheme is essential for achieving the required signal reduction.
This paper investigates how introducing a linear Lorentzian-type coupling to Starobinsky and KKLT inflation potentials breaks slow-roll conditions to generate significant primordial black hole abundances and the associated scalar-induced gravitational waves.