3234 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 develops a systematic worldline effective field theory framework to compute gravitational Sommerfeld factors for binary inspirals with tidal effects, deriving closed-form expressions and analytically solving for the magnitude and phase of the factor up to while establishing a new renormalization group equation for radiative multipole moments to improve waveform resummation.
This paper demonstrates that time delay observables of higher-order images from transient sources can break degeneracies in black hole shadow imaging by uniquely identifying spacetimes with multiple photon spheres through distinctive signatures like minimum travel time, minimum angular deflection, and a characteristic triplet structure.
This paper derives a closed formula for computing static post-Newtonian corrections to two-body gravitational dynamics at any odd order using a correlation function framework and symmetry, which is applied to successfully calculate the seventh-order potential and confirm its agreement with diagrammatic factorization theorem results.
This paper presents a family of spherically symmetric black brane solutions in a model with multicomponent anisotropic fluid, governed by moduli functions satisfying non-linear differential equations, and demonstrates that specific subclasses with horizons arise when the equation of state parameters correspond to semisimple Lie algebras, thereby generalizing known solutions in supergravity and higher-dimensional gravity.
This paper analyzes phenomenological templates for gravitational wave echoes from exotic compact objects to demonstrate that current and future interferometers can accurately estimate their parameters, potentially confirming horizonless geometries and probing strong-field gravity.
This paper investigates the numerical stability of an algebraic-hyperbolic formulation of the Einstein constraint equations for cosmological space-times using a pseudo-spectral method, revealing that while the scheme suffers from unavoidable instabilities near FLRW space-times, it can be stable for Gowdy space-times and specific subclasses, offering a potential new approach for computing inhomogeneous initial data.
This paper establishes that demanding the positivity of anomalous dimensions for heavy-light double twist operators in the dual CFT imposes a charge-to-mass ratio bound on charged probes in higher-derivative AdS black holes that exactly matches the Weak Gravity Conjecture, while demonstrating that Innermost Stable Circular Orbits (ISCOs) persist up to this bound with radii decreasing as higher-derivative coupling parameters increase.
This paper introduces a score-based diffusion model approach that learns the empirical distribution of non-Gaussian instrumental noise directly from detector data, enabling unbiased gravitational-wave parameter estimation without the need for traditional data cleaning or computationally expensive joint inference.
This paper presents a theoretical framework comparing electromagnetic radiation signatures from scalar fields in modified gravity with those of axion-like particles, demonstrating how distinct parity couplings and resonance effects can produce observable differences to aid in distinguishing between these models.
This paper derives analytical black hole metrics surrounded by dark matter spikes using the Tolman-Oppenheimer-Volkoff equations and investigates their gravitational wave ringdown waveforms, revealing that dark matter parameters induce detectable shifts in quasinormal frequencies up to the order of .