3285 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 derives closed-form, second post-Newtonian phasing formulae for eccentric compact binary inspirals with precessing spins by exploiting timescale separation and precession averaging, thereby enabling efficient and accurate gravitational waveform modeling without the need for numerical integration.
This paper proposes a thermal vacuum model for cosmology that replaces the inflaton and dark energy with a thermal equilibrium state of the expanding universe's vacuum at the Gibbons-Hawking temperature, thereby providing a unified mechanism for inflation, graceful exit, and late-time cosmic acceleration while also offering insights into baryogenesis and dark matter constraints.
This study analyzes 66 gravitational wave events to demonstrate that the probability of classifying compact objects as neutron stars is highly sensitive to population model assumptions—particularly pairing preferences and spin distributions—rather than just measurement noise or equation of state constraints, leading to significant classification uncertainties for events like GW230529 and GW190425.
This paper investigates how eccentricity and orbital anomaly angle influence the excitation of quasinormal modes and late-time power-law tails in gravitational waveforms from small-mass-ratio eccentric binaries plunging into a Kerr black hole, revealing that while eccentricity generally amplifies late-time tails, the specific impact is highly dependent on the orbital anomaly angle.
This paper extends strong-deflection-limit analysis methods to investigate gravitational lensing by rays inside and outside marginally unstable photon spheres in general static, spherically symmetric, asymptotically-flat spacetimes, applying the framework to Reissner-Nordström and Hayward models to resolve previous discrepancies in power-divergent deflection angle calculations.
This paper investigates Euclidean AdS geometries generating closed baby universes from a 2D holographic CFT, demonstrating that while such configurations are naturally subdominant, a specific prescription can render them the leading saddle to produce a reliable semi-classical mixed state interpretable through Virasoro TQFT.
This paper develops a fully general-relativistic formalism to model the formation of shallower dark matter "mounds" around supermassive black holes resulting from the non-adiabatic collapse of supermassive stellar progenitors, revealing significant reshaping of the dark matter phase-space distribution that is crucial for interpreting future extreme mass-ratio inspiral observations.
This paper unifies the Hamiltonian analysis of axial perturbations for both the interior and exterior of Schwarzschild black holes by clarifying the relationship between canonical gauge invariants and established master functions, while also providing a geometric characterization of Darboux transformations as canonical transformations within this framework.
This paper computes one-loop corrections to the matter power spectrum in Interacting Dark Energy models, reinterprets them within the Effective Field Theory of Large-Scale Structure framework, and uses BOSS DR12 data to constrain a novel velocity-dependent interaction term, finding results consistent with the standard CDM model.
This paper demonstrates that the presence of astrophysical foregrounds and strong primordial non-Gaussianity significantly weakens the link between scalar-induced gravitational waves and primordial black hole abundance, thereby limiting LISA's ability to definitively confirm or rule out asteroid-mass primordial black holes as dark matter.