2489 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 utilizes a mapping between Einstein--Scalar--Maxwell and gauged Skyrme--Maxwell--Einstein theories to derive novel, closed-form mass formulas for Melvin and Bonnor--Bertotti--Robinson spacetimes, revealing a specific linear-to-nonlinear relationship between mass and baryonic charge that facilitates the interpretation of gravitating scalar configurations in terms of baryonic quantities.
This paper investigates odd-parity gravitational perturbations of static black holes in trace-quadratic gravity with anisotropic matter, identifying a regular admissible branch where the axial ringdown spectrum is governed by a single master equation and exhibits a significant mass-normalized deviation from Schwarzschild while showing negligible direct dependence on the trace coupling parameter .
This paper employs the DARK-FLIP II framework to demonstrate that the relativistic intermediate-axis instability flip frequency around rotating black holes is robustly sensitive to dark matter profiles, serving as a controlled diagnostic clock where increased dark matter normalization decreases the frequency and extended profiles weaken the local response.
This paper proposes a holographic model of Josephson transport in a Reissner–Nordstrom-AdS black brane background where a spatially inhomogeneous chemical potential creates a weak link, demonstrating that the near-extremal throat geometry controls the critical current and phase stiffness through the infrared scaling dimension of the charged scalar, thereby distinguishing genuine near-extremal effects from standard proximity suppression.
This paper proposes a nonlinear extension of the Madelung transformation using a hyperbolic phase-amplitude coupling to derive amplitude-dependent quantum hydrodynamics that modifies the continuity and force equations, ultimately leading to density-gradient-sensitive corrections in the London equations and Meissner effect.
This paper introduces a gravitational-wave method to directly infer a black hole's horizon area from near-merger signals before quasinormal ringing dominates, demonstrating with event GW250114 that this approach yields an area consistent with the Kerr remnant and provides a novel test of Hawking's area law.
This paper extends the stochastic inflation paradigm to a wide class of fully nonlinear scalar-tensor theories by applying a gauge-agnostic coarse-graining procedure to the effective field theory of dark energy, thereby deriving consistent stochastic equations of motion for models such as Gauss-Bonnet, Horndeski, and multifield inflation within full General Relativity.
This paper investigates the behavior of generalized Lemaitre time for rotating and charged black holes, establishing a relationship between its finiteness, the forward-in-time condition, and kinematic censorship to provide a new explanation for why particle collisions inside the horizon cannot yield infinite center-of-mass energy.
This paper proposes a unified -quintom framework that achieves a stable, non-singular bouncing cosmology with a novel double phantom divide line crossing, while demonstrating that FLRW symmetry constraints effectively suppress Ostrogradsky instabilities and ensure ghost-free dynamics.
This paper reports the first detection of a positive angular cross-correlation between fast radio burst dispersion measures and the thermal Sunyaev-Zeldovich effect, a finding that constrains the average electron temperature of the intergalactic medium and offers a new pathway to break degeneracies in cosmological parameters.