2649 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 extends the thermodynamic framework of black holes by incorporating charge and rotation through an analogy with charged rotating soap bubbles, demonstrating via the Gouy-Stodola theorem that charge influences entropy and angular momentum while preserving the validity of the first law of thermodynamics.
This paper establishes a rigorous semiclassical framework for Einstein--Cartan theory with a nonminimally coupled Klein--Gordon field in four dimensions, utilizing Hadamard renormalization and differential forms to derive well-defined energy-momentum and spin-density expectation values while analyzing the persistence of the conformal anomaly in the presence of torsion.
This paper investigates massless spin-1 field propagation in a static, circularly symmetric -dimensional Lorentz-violating wormhole, deriving an exact radial equation that reveals the geometry acts as an inhomogeneous optical medium with frequency-dependent confinement and establishing a mathematical equivalence between Lorentz-violation-induced curvature and the twist of helicoidal surfaces like graphene nanoribbons.
This paper introduces a waveguide-like mode description to model beam tube boundary effects in third-generation gravitational-wave detectors, demonstrating that such effects are subdominant in densely baffled cavities and thereby validating the continued use of standard FFT-based tools for their design.
This paper proposes that the standard CDM cosmological model naturally emerges within General Relativity through a dynamic breaking of energy-momentum symmetry in the quantum interpretation of the cosmological constant, thereby resolving the fine-tuning and coincidence problems without requiring exotic fields or fine-tuning.
This paper proposes a method to estimate the direction of arrival of gravitational waves from isolated sources, such as supermassive black hole binaries, by analyzing the rank-2 traceless correlation matrix of quadrupole moments in pulsar timing data, demonstrating its potential for high angular resolution with future observatories like the Square Kilometer Array.
This paper develops a dark-sector selective gravity model that couples curvature exclusively to dark matter to resolve theoretical ambiguities, derives its linear perturbation equations to predict scale- and time-dependent deviations from General Relativity, and establishes a multi-probe framework using redshift-space distortions and lensing to constrain these effects beyond background expansion tests.
This paper demonstrates that the specific dimensional scaling proposed for 4D Einstein-Gauss-Bonnet gravity naturally arises as a necessary consequence of one-loop graviton self-energy corrections in a curved background, revealing it as a quantum renormalization effect rather than an ad-hoc classical limit.
This paper presents an exact, analytically solvable spinning generalization of the Morris-Thorne traversable wormhole supported by anisotropic fluid, demonstrating its stable causal structure despite ergoregions, characterizing its distinctively smaller optical shadows compared to Kerr black holes, and identifying unique multipole moments that encode the throat scale in a massless, spinning configuration.
By modeling Hawking radiation as a biased random walk within an effective field theory of gravity, this study demonstrates that primordial black holes can survive to the present epoch by evolving toward near-extremality with a fraction comparable to general relativity, while predicting that the resulting extreme near-horizon tidal forces may be detectable by future gravitational-wave observatories.