2615 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 investigates the thermodynamic and optical properties of charged black holes surrounded by a cloud of strings within bumblebee gravity, analyzing how Lorentz-violating effects modify standard General Relativity predictions and providing observational constraints through black hole shadows and Solar System tests.
This paper presents a strong-deflection expansion for the light deflection angle near a degenerate photon sphere in static, spherically symmetric spacetimes, deriving a unique leading power-law term whose coefficient factorizes into a universal constant and a local geometric factor expressible via tidal measures or null-energy density profiles.
This paper proposes a scalar shortcut method that uses exact scalar field quasinormal mode deviations as an accurate proxy for gravitational corrections in beyond-Kerr scenarios, demonstrating that current ringdown constraints can be comparable to or more stringent than black hole shadow observations while offering complementary tests of gravity.
This paper demonstrates that for shift-symmetric scalars in de Sitter space, a quantum anomaly in renormalization forces the late-time wavefunction to acquire an imaginary part that is entirely determined by its renormalization scale dependence to all loop orders, thereby establishing an infinite set of relations among correlators of massless fields and their conjugate momenta.
This paper demonstrates that rotating Kerr black holes endowed with synchronized scalar hair significantly alter the orbital structure and observable appearance of thin accretion disks, particularly for counter-rotating configurations, thereby providing robust observational diagnostics for testing tensor-multi-scalar gravity through future horizon-scale imaging.
This paper derives an exact black hole solution in Eddington-inspired Born-Infeld gravity surrounded by perfect fluid dark matter, analyzing how model parameters affect the event horizon and demonstrating the high sensitivity of stable circular orbits to the system's coupling constants.
This paper introduces a fast, phenomenological method using time-frequency domain energy analysis and Bayesian-inspired sampling to rapidly constrain orbital eccentricity in binary black hole inspirals, demonstrating the ability to achieve estimates within 0.2 of the true value in just five minutes.
This paper proposes a hybrid deep learning approach that combines matched-filtering concepts with Convolutional Neural Networks to achieve detection efficiency comparable to standard methods while significantly reducing computational costs for future gravitational-wave searches.
This paper presents a relativistically self-consistent analytic framework for estimating Extreme Mass-Ratio Inspirals (EMRIs) that, by generalizing the loss-cone angular momentum and revising the plunge pericenter in Schwarzschild spacetime, reveals that relativistic effects increase predicted event rates by approximately a factor of eight compared to Newtonian treatments, thereby underscoring their critical importance for space-based gravitational-wave detectors like LISA and Taiji.
This paper presents a global dynamical systems analysis of quadratic cosmology with a perfect fluid in spatially flat models, comparing the Jordan and Einstein frames to characterize orbit structures, desingularize fixed points, and identify which solutions are globally conformally mapped between the two frames.