3255 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 applies goodness-of-fit tests to the residuals of events in the third gravitational-wave transient catalog, finding no statistically significant deviation from instrumental noise and demonstrating a simple, computationally efficient method that works even with single-detector events.
This paper derives the conservative two-body potential and scattering angle for charged black holes in Einstein-Maxwell-Dilaton theory by expanding one-loop on-shell soft amplitudes in the Post-Minkowskian regime, demonstrating that infrared-finite results consistent with the Lippmann-Schwinger equation successfully track electromagnetic and dilatonic charge effects while reducing smoothly to General Relativity.
By applying the generalized second law to the apparent horizon of a homogeneous and isotropic universe with an equation of state no less than $-1$, the paper demonstrates that flat and closed universes are consistent with the dominant energy condition, whereas hyperbolic universes are not.
This paper investigates the Schwinger effect with backreaction in 1+1D massive QED using a bosonized, fully quantum approach to demonstrate that the electric field obeys a classical nonlinear equation and exhibits dissipation-free oscillations with a plasma frequency shift that semiclassical approximations fail to capture.
This paper investigates how shear viscosity in the post-inflationary universe modifies the propagation of primordial gravitational waves, demonstrating that viscosity induces additional damping and spectral running—such as a blue tilt from freeze-out in the electron-photon-baryon plasma—thereby altering the gravitational wave energy density spectrum by approximately .
This paper analyzes a nonminimally coupled curvature-matter gravity model that yields dynamical dark energy, demonstrating that its parameters can simultaneously satisfy cosmological constraints from DESI, Pantheon+, and Dark Energy Survey data while remaining consistent with lunar laser ranging limits on the equivalence principle.
This paper utilizes the heat kernel technique to demonstrate that specific ghost-free, infinite derivative gravity theories with generic form factors can completely cancel one-loop ultraviolet logarithmic divergences in four dimensions, thereby identifying conditions for renormalizability and providing general expressions for beta functions.
This paper presents a generalized numerical framework based on ordinary differential equations to simulate polarized radiative transfer in Kerr-Newman black holes, revealing that black hole charge significantly distorts photon trajectories and polarization patterns, thereby offering a potential diagnostic for detecting nonzero charge.
This paper utilizes a worldline effective field theory in a Schwarzschild--Tangherlini background to compute the gravitational Compton amplitude up to third post-Minkowskian order, establishing a regulated bridge to black hole perturbation theory results while outlining applications for finite-size effects like spin and tidal features.
Using symplectic model order reduction, this paper demonstrates that the minimal number of canonical degrees of freedom required to describe the Hamiltonian evolution of a regularised scalar field scales with the area of the region rather than its volume, a phenomenon driven by the count of distinct normal-mode frequencies and observed in both flat and curved spacetimes as well as weakly interacting theories.