3841 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 introduces DSWIM, a numerically robust and computationally efficient deterministic framework for calculating warm inflation perturbations that utilizes a physically motivated scaling transformation to resolve ill-conditioning issues, eliminate numerical artifacts, and reconcile discrepancies between stochastic and deterministic methods while preserving accuracy.
This paper proposes that the cosmological constant problem is resolved by interpreting the dimensionless coupling in conformal gravity as the Bekenstein-Hawking entropy of de Sitter spacetime, where the renormalization group flow of these microscopic degrees of freedom naturally yields the observed, extremely small value of the cosmological constant.
This paper employs minisuperspace reduction and affine quantization to analyze the quantum dynamics of the dynamical Reissner–Nordström geometry, deriving separable solutions that reveal how electric charge and short-distance affine corrections modify the wave function's behavior and extend previous Schwarzschild results.
This paper demonstrates that de Sitter space can decay into black holes with vortex-deformed horizons via a vortex-generalized Nariai instanton, establishing a new family of decay channels controlled by discrete topological charges.
This paper investigates how the geometric and scalar-particle couplings in Freund-Nambu scalar-tensor gravity modify test particle dynamics and gravitational wave signatures around a spherically symmetric vacuum solution, revealing that these parameters shift critical orbital boundaries and induce distinct temporal dephasing in extreme mass-ratio inspirals that could be detected by future space-based observatories like LISA.
This paper constructs a holographic model for type-II superconductors on a 5-dimensional anisotropic rotating black hole, demonstrating that black hole rotation mimics quasiparticle damping in AC conductivity and that external magnetic fields induce continuous vortex lattice deformations, thereby extending the holographic description of experimental phenomena in materials like LiFeAs.
This paper demonstrates that pulsar timing array observations of scalar-induced gravitational waves impose stringent constraints on the abundance of primordial black holes, particularly for stellar-mass objects, though these limits are significantly relaxed by positive non-Gaussianities or alternative formation theories like the peaks formalism.
This paper establishes the well-posedness of the initial boundary value problem for the vacuum Einstein equations under conformal-mean curvature boundary conditions by proving the dense range of the linearized solution space and a Holmgren-type uniqueness theorem, provided an arbitrary corner angle term is included at the intersection of the Cauchy surface and the timelike boundary.
This paper introduces a Lorentzian Gromov-Hausdorff convergence framework based on causal diamonds and the time separation function, establishing pre-compactness theorems for globally hyperbolic spacetimes and demonstrating the stability of timelike sectional curvature bounds along with connections to causal set theory.
This paper proposes that quasi-periodic eruptions (QPEs) like RX J1301.9+2747 can be explained by extreme-mass-ratio inspirals interacting with accretion disks, predicting distinct gravitational wave signatures with frequency shifts and high-frequency tails that future space-based detectors like LISA could use to distinguish these events from vacuum systems and probe the origins of QPEs.