4035 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 study utilizes axisymmetric simulations of a rotating, magnetized progenitor to demonstrate that prompt stellar convection generates early-time gravitational wave signals with amplitudes comparable to or exceeding the bounce signal, while magnetic fields modulate signal strength by decelerating core rotation and influencing mode excitation.
By incorporating orbital eccentricity into the analysis of the GW200105 neutron star-black hole merger, this study demonstrates that neglecting eccentricity leads to false deviations from general relativity, while its inclusion significantly tightens constraints on Einstein-dilaton-Gauss-Bonnet and Brans-Dicke modified gravity theories.
This paper investigates the shadows of Kerr-Bertotti-Robinson black holes to demonstrate how the external magnetic field parameter and spin influence shadow size, shape, and observables, providing a framework for parameter estimation and distinguishing these non-Kerr spacetimes from standard Kerr black holes.
This paper demonstrates that inflationary expansion, by driving scalar field fluctuations to the Hubble scale and thereby significantly increasing fermion masses via Yukawa couplings, acts as a highly efficient mechanism for producing Standard Model fermions, right-handed neutrinos, and fermionic dark matter, potentially serving as the primary source for the latter two.
By applying a deformation to a bottom-up dS/CFT model, this paper establishes a holographic framework on flat Cauchy slices where time emerges from RG flow, demonstrating precise analytic agreement between the deformed boundary theory's correlation functions and bulk wavefunction coefficients while revealing unique cosmological features such as imaginary counterterms and nonlinear shifts in correlators.
This paper presents a machine learning pipeline using convolutional neural networks trained on real LIGO data to detect binary black hole mergers, successfully identifying 57 out of 75 cataloged events across observing runs O1–O3 while characterizing its false alarm rate to enable low-latency gravitational wave detection.
This paper analyzes how gravitational waves affect a Sagnac interferometer by identifying a novel polarization rotation effect arising from gravitational holonomy, which becomes the dominant signal for freely falling observers where the traditional phase shift vanishes.
This paper introduces a novel matter Lagrangian that models dark energy as a non-standard thermodynamic combination of baryonic matter, demonstrating its distinctness from existing matter-geometry coupling models, its separate conservation of energy-momentum tensors, and its observational viability against cosmic chronometers, Pantheon+, and datasets compared to the standard CDM model.
This paper establishes a first-order Feshbach-Villars Hamiltonian framework for spin-0 particles within generalized doubly special relativity to analyze how Planck-scale kinematic deformations modify the spectral properties of the Klein-Gordon oscillator and shift the supercritical pair-production thresholds in step and barrier scattering scenarios.
This paper reconstructs the effective potential and Gauss-Bonnet coupling function in Einstein-Gauss-Bonnet gravity using the scalar spectral index and tensor-to-scalar ratio consistent with ACT data, demonstrating that these functions are not inversely proportional, contrary to previous assumptions.