3824 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 demonstrates that first-order Horndeski scalar-tensor couplings induce a dynamical cooling effect in two-dimensional CGHS black holes, causing Hawking evaporation to halt and potentially form stable macroscopic remnants that preserve quantum information and modify the Page curve without violating horizon regularity.
This paper demonstrates that tensor-induced backreaction at second order significantly limits the suppression of the slow-roll parameter and the enhancement of the scalar power spectrum during ultra-slow-roll inflation, thereby reducing the fine-tuning required for primordial black hole production when analyzed through a self-consistent, non-perturbative framework.
This paper investigates Conformal Killing Gravity, a geometric framework where dark energy emerges from conformal Killing symmetry without empirical parametrization, and finds that constraints from recent cosmological datasets (including DESI DR2 and Planck PR4) favor a quintessence-like evolution approaching a cosmological constant while predicting a future expansion turning point, though the model fails to fully resolve the tension.
This study demonstrates that while dark matter in a phantom field background has minimal impact on radially moving neutrinos, it induces distinct phase shifts and parameter degeneracies for deflected neutrinos, thereby offering a potential avenue for probing dark matter properties through neutrino oscillations in extreme gravitational environments.
This review article examines the critical challenges of environmental noise, particularly in the 2–10 Hz range, that threaten the unprecedented sensitivity of the next-generation Einstein Telescope, while summarizing ongoing research into site characterization, infrastructure design, and mitigation strategies essential for its scientific success.
The paper introduces \celephais, an efficient spectral initial-data code built on the \texttt{Kadath} library that utilizes adaptive $hp$-refinement and Jacobian-free Newton--Krylov iterations to generate accurate, non-symmetric initial data for precessing binary-neutron-star and black-hole--neutron-star systems with arbitrary spin orientations.
This paper presents a multi-pipeline follow-up study of a continuous gravitational-wave outlier from supernova remnant G347.3-0.5, confirming its presence in O3 data but finding no evidence of a standard signal in subsequent O4a and O4b observations, thereby serving as a critical test case for future candidate verification.
This paper concludes that gravitational-wave lensing by intermediate-mass black holes within globular clusters is highly unlikely, with relative rates as low as 1/10,000, thereby disfavoring such an explanation for the GW231123 event and suggesting lensed waves are instead a more promising probe for dark matter substructures and primordial black holes.
This paper demonstrates that a specific scale-invariant, dipole-conserving fracton Hamiltonian naturally evolves toward stable fixed points that reproduce the key features of a flat, matter-dominated cosmology—including Einstein-de Sitter expansion, homogeneous particle distributions, and a bidirectional arrow of time—without requiring fine-tuning.
This paper demonstrates that the shape and compactness of a dark matter halo surrounding a black hole significantly alter its gravitational ringdown frequencies and tidal Love numbers, providing a potential observational method to distinguish environmental effects from intrinsic deviations in black hole geometry.