3826 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 an analytical thick-brane solution in teleparallel Gauss-Bonnet gravity, demonstrating that the interplay between brane splitting and tensor stability leads to a viable model free of tachyonic instabilities that supports a normalizable graviton zero mode and enhanced gravitational resonances.
This paper demonstrates that a single complex quasinormal frequency in the eikonal limit can uniquely reconstruct the geometric parameters and thermodynamics of static, spherically symmetric black holes within a specific model family, revealing that distinct theories like Reissner-Nordström and Modified Gravity can share identical scalar spectra despite differing entropies, thereby establishing the method as a model-dependent inverse rather than a universal theory selector.
This study utilizes general-relativistic magnetohydrodynamical simulations and nuclear reaction networks to characterize the geometric, thermodynamic, and nucleosynthetic properties of dynamical ejecta from high-spin, high-mass-ratio black hole-neutron star binaries, ultimately generating kilonova light curves that show consistency with observed events like AT2017gfo.
This paper investigates cosmological inflation within a linear f(R,T) gravity framework augmented by a Chern-Simons correction, demonstrating that the inclusion of this quantum gravity-induced term refines predictions for inflationary observables—specifically the tensor spectral index and tensor-to-scalar ratio—to achieve strong agreement with Planck 2018 and joint Planck-BK15-BAO data.
This paper investigates the dynamical stability, thermodynamic properties, and observational signatures of charged Reissner-Nordström black holes in bumblebee gravity, revealing how Lorentz symmetry breaking and electric charge influence quasinormal modes, greybody factors, and phase transitions.
This paper proves that static spheres in static, spherically symmetric black hole spacetimes must appear in unstable-stable pairs requiring negative radial pressure and a violation of the strong energy condition, while also deriving a rigorous upper bound on the radius of the innermost sphere based on horizon properties and the strength of that violation.
This paper utilizes general relativistic ray-tracing and polarized imaging to demonstrate that the distinct eccentric nested intensity rings and inter-ring polarization discontinuities of a post-bounce white hole provide observable signatures to distinguish it from a black hole using future very-long-baseline interferometry.
This paper demonstrates that flavor-current correlators in strongly-coupled dense holographic matter agree with non-Abelian hydrodynamic predictions in an extended hydrodynamic regime where temperature is much lower than frequency and momentum, and proposes a holographic product formula to capture both hydrodynamic and AdS pole effects.
This paper proposes a three-parameter generalization of the Barboza-Alcaniz dark energy model that resolves its future-time shortcomings, is favored by cosmological data over both the original model and CDM, and exhibits a similar qualitative behavior with a slightly reduced acceleration rate.
This paper derives a new exact solution of four-dimensional Kaluza-Klein theory representing a Zipoy-Voorhees spacetime with Maxwell and dilaton fields, characterizing its physical parameters and analyzing the equatorial geodesics of test particles and photons to reveal how deformation and charge influence black hole properties, orbital stability, and shadow size.