3151 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 demonstrates how the Gravity Spy project leverages Zooniverse volunteers to identify new LIGO glitch classes, revealing their connection to detector states and highlighting the challenges they pose for machine-learning classification.
The paper summarizes the GR-Amaldi 2025 Early Career Workshop, a three-day event designed to unite early-career researchers in gravitational physics through scientific overviews, skill development, and networking to foster a cohesive and collaborative community.
This paper presents model-independent forecasts for the sensitivity of current and future gravitational-wave detectors to the stochastic background generated by the decay of ultralight dark matter into gravitons.
This paper proposes a theory where wavefunction collapse in general relativity, driven by stochastic fluctuations of the lapse and shift, generates emergent time and a monotonic scale factor, leading to the suppression of constraint-violating modes while identifying long-lived scalar excitations as a viable dark matter candidate and recovering unitary dynamics for tensor gravitons in the long-time limit.
Through numerical relativity simulations of equal-mass black hole scattering, this study demonstrates that spin-up and mass-gain are maximized near the merger threshold with high momenta and anti-aligned spins, revealing that sufficiently high initial spin can paradoxically lead to a spin-down despite an increase in total angular momentum due to significant mass accretion.
This paper establishes a criterion for extending Einstein-Maxwell solutions to conformally invariant non-linear electrodynamics via constant field rescaling, demonstrating that all static or twistfree configurations are extendable and providing explicit examples such as generalized black holes and gravitational waves.
The paper argues that while stationary black holes adhere to standard Bekenstein-Hawking thermodynamics, the evolving universe fundamentally requires a "teleodynamic" framework driven by horizon memory accumulation, thereby establishing a distinct thermodynamic regime for cosmology that challenges the extrapolation of black hole thermodynamics to the universe.
This paper proposes a model-independent mechanism for spontaneous wave function collapse driven by non-local gravitational self-energy, which arises from the fundamental tension between the equivalence principle and quantum superposition in a semiclassical spacetime, resulting in a collapse time inversely proportional to the system's mass.
This paper analyzes curvature invariants across a broad ensemble of neutron star equations of state, revealing that negative Ricci scalars are surprisingly common in massive, compact stars, while also refining the quasi-universal mass relation and determining the conditions under which the trace anomaly vanishes or becomes negative.
This paper demonstrates that the gauge dependence of one-graviton-loop corrections to the effective field equation of a massless, minimally coupled scalar in de Sitter space cancels out when contributions from all diagram classes, including one-loop corrections to external mode functions, are consistently collected, thereby supporting the construction of gauge-independent cosmological quantum-gravitational observables.