2575 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 constructs a nonperturbative Kontorovitch-Lebedev-Fourier (KLF) momentum space for quantum field theory on de Sitter spacetime, where the dS frequency serves as a unitary representation label, thereby transforming equations of motion into algebraic forms and streamlining the computation of in-in correlators and loop integrals through a group-theoretical framework.
This paper investigates a modified gravity model inspired by a generalized mass-to-horizon entropy relation, demonstrating that it successfully distinguishes itself from standard CDM frameworks by altering cosmic expansion and structure formation dynamics while satisfying thermodynamic equilibrium requirements.
This paper presents the first 3D GRMHD simulation of accretion onto a horizonless JMN-1 singularity, demonstrating that while it mimics black hole observations like M87*, it can be distinguished by detectable emission from within the shadow that would be hidden behind an event horizon.
This paper introduces a specific ansatz for force-free electrodynamics in Minkowski spacetime that reduces the nonlinear system to a semilinear scalar wave equation, enabling the derivation of explicit time-dependent solutions, including finite-energy type-changing configurations and null kinks, while characterizing minimal field-sheet foliations for traveling waves in the magnetically dominated regime.
This paper employs the Dirac-Bergmann algorithm to demonstrate that introducing fixed external currents into Seiberg-Witten mapped non-commutative electrodynamics creates a source-compatibility obstruction located within the Dirac constraint chain, which typically resolves by fixing the primary multiplier rather than generating new constraints, thereby limiting a complete reduced-phase-space analysis to specific first-class subcases.
This paper demonstrates that a minimal two-field scalar-tensor completion of Starobinsky inflation remains robust against radiative deformations, as nearby trajectories converge to an attractor where suppressed entropy modes preserve the model's characteristic Starobinsky-like observational predictions.
This paper studies the equal-mass double Schwarzschild solution in bispherical coordinates by providing an explicit conformal transformation from Weyl coordinates using elliptic functions and presenting a multi-domain spectral method to numerically reconstruct the solution.
This paper introduces a hierarchical Bayesian model that accurately measures the rate of non-Gaussian noise glitches in gravitational wave detectors across low signal-to-noise regimes without arbitrary thresholds, enabling time-resolved analysis and the identification of coincident glitches such as the retracted candidate GW230630_070659.
This paper proposes a deterministic, non-relativistic framework where wave-function collapse arises from a gravitational bifurcation in a nonlinear Schrödinger equation, leading to stable localized states without stochastic noise or environmental coupling.
This paper forecasts that upcoming radio telescopes, specifically LOFAR2.0, FAST Core Array, and BINGO, will significantly enhance the ability to constrain the fraction of dark matter composed of Primordial Black Holes by detecting or ruling out lensed Fast Radio Bursts across various mass ranges.