⚛️ general relativity
George, I and the curvaton
This paper provides a brief overview of the joint research between the author and his late collaborator George Lazarides, focusing on their development and application of the curvaton hypothesis.
⚛️ Category
gr-qc
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.
⚛️ general relativity
Conformal symmetries and MOTS stability
This paper establishes that under mild energy conditions, the stability and smooth evolution of a marginally outer trapped surface (MOTS) into a spacelike horizon are determined by its intersection with past-pointing conformal Killing vector fields and the sign of the vector field's divergence on the surface.
⚛️ general relativity
Neutrino mass constraints in the Schwarzschild-de Sitter black-hole dark energy model with ACT DR6 and DESI DR2 data
Using recent CMB, DESI, and supernova data, this study finds that the Schwarzschild-de Sitter black-hole dark energy model prefers a positive neutrino mass due to parameter correlations, yet the standard CDM model remains strongly favored over this alternative framework.
⚛️ general relativity
Singularities, Entropy and the Arrow of Time, {\it or} Is CRT a Gauge Symmetry in Quantum Gravity?
The paper argues that while CRT is generally not a gauge symmetry in quantum gravity, it can function as an asymptotic gauge symmetry in flat and AdS spaces or as a spontaneously broken gauge symmetry in eternal dS space under specific theoretical conditions, though practical measurement limitations in dS space constrain the physical realization of these concepts.
⚛️ general relativity
Quantum nucleation of black hole mimickers via chaos dominated tunneling
This paper proposes that quantum chaotic dynamics can catalyze multichannel tunneling to dramatically enhance the nucleation of ultracompact black hole mimickers, such as string theoretic black shells, during gravitational collapse.
⚛️ general relativity
Disentangling modified gravity and galaxy bias with field-level inference
This paper presents a field-level inference framework that jointly constrains modified gravity and galaxy bias parameters by analyzing the full three-dimensional galaxy distribution, demonstrating that leveraging non-Gaussian and phase information—particularly from under-dense regions—significantly breaks the degeneracies inherent in traditional power-spectrum analyses.
⚛️ general relativity
Gravitational Wave Signatures of Cosmological Stasis: A Unified Spectral Template
This paper proposes a unified, falsifiable closed-form spectral template for gravitational waves generated during a cosmological stasis epoch, which allows future detectors like BBO and DECIGO to verify or rule out any constant-equation-of-state cosmology by testing whether measured spectral tilt and amplitude step data align with a specific consistency curve.
⚛️ general relativity
Black Hole Memory Burden and its Signatures in Gravitational Waves from Mergers
This paper demonstrates that the "swift memory burden" of black holes, which can vastly exceed the information content of their progenitors and significantly alter gravitational wave frequencies during mergers, serves as a probe into both the fundamental mechanisms of black hole information storage and their formation history.
⚛️ general relativity
A conformal reduction for the X-ADM mass
This paper establishes the positivity of the X-ADM mass in all dimensions by demonstrating its equivalence to the standard positive mass theorem via a conformal reduction argument, thereby proving the X-positive mass theorem without prior topological restrictions and deriving the Riemannian mass–charge inequality as a corollary.
⚛️ general relativity
Additional Observational Signatures of Asymmetric Thin-Shell Wormholes within 4D Einstein-Gauss-Bonnet Gravity
This paper investigates the optical signatures of asymmetric thin-shell wormholes in 4D Einstein-Gauss-Bonnet gravity, demonstrating that their distinct photon ring structures and lensing bands—unlike those of black holes—serve as reliable criteria for distinguishing these spacetimes based on the Gauss-Bonnet coupling, mass ratio, and throat radius.