3805 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 resolves ambiguities in post-Minkowskian binary dynamics by determining spin Casimir terms from massive scattering amplitudes, thereby completing the calculation for spinning black hole scattering, establishing a generalized amplitude-action relation, and revealing a hidden spin-shift symmetry linked to the integrability of Kerr orbits.
This paper demonstrates that induced gravitational waves generated during an early matter-dominated phase can serve as a unique observational probe for thermal leptogenesis, with their frequency and amplitude directly correlated to the leptogenesis energy scale.
This paper rigorously derives particle production in a cosmological FLRW background by modeling a long gravitational pulse analogous to the Schwinger effect, utilizing Heun equation connecting formulas to demonstrate that the resulting particle spectrum exhibits a Planckian distribution with a temperature inversely proportional to the duration of the scale change.
This study challenges the assumption of flat late-time tidal disruption event plateaus by demonstrating that roughly one-third of observed events exhibit significant evolution, and by applying magnetically elevated disk models to these evolving cases, it derives supermassive black hole and stellar masses alongside viscosity parameters that suggest disk precession occurs on timescales orders of magnitude shorter than in unmagnetized models.
This paper presents a quantization of unimodular gravity for a matter-free, homogeneous, isotropic, and spatially flat cosmological model in the connection representation, revealing that the Hamiltonian's self-adjointness precludes a negative cosmological constant while causing wave functions to vanish at zero volume for a positive one, thereby offering insights into the cosmological constant problem.
This paper demonstrates that the observational signatures of static and rotating wormholes, including shadow size, photon-ring sharpness, and accretion disk appearance, are distinctly shaped by their surrounding dark matter profiles, with solitonic wave dark matter supporting a genuine photon sphere and offering a unique probe of ultralight boson mass that the cuspy Navarro-Frenk-White halo lacks.
This paper investigates horizon-brightened acceleration radiation (HBAR) and the strong-deflection angle of light near a degenerate photon sphere in a quantum-corrected Schwarzschild-like black hole, deriving key thermodynamic relations and a Wien-type displacement law that link near-horizon radiation to quantum gravity effects.
This paper demonstrates that density-preserving core-Einasto dark matter halos produce negligible shifts in black hole shadows compared to cusp-based rotation-curve models, implying that current Event Horizon Telescope observations cannot constrain smooth kiloparsec-scale halos and would instead require compact inner components to generate observable environmental signals.
This paper presents a fast, fully differentiable neural-network surrogate for precessing binary black-hole waveforms that generates high-fidelity inertial-frame modes in milliseconds, enabling efficient gradient-based parameter estimation and population studies through analytic projection to arbitrary observer orientations.
This paper extends the Lee-Yang phase transition framework to charged AdS black holes in trace anomaly gravity, revealing that quantum corrections suppress critical parameters and defining a Widom line that separates small and large black hole phases via a continuous crossover in the supercritical regime.