3784 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 that the quantum Hall analog of Hawking radiation, arising from a Fermi sea under a quadrupolar potential, is accurately described by guiding center quantization on a non-commutative plane, where the resulting kinematical constraint forces edge-localized electrons to propagate thermally in both directions, effectively corresponding to analog Unruh radiation.
This study uses 3D numerical relativity to demonstrate that the collapse of rotating, very-massive stellar cores (200–1100 ) into rapidly spinning black holes (spin > 0.8) produces massive, unstable disks that emit detectable gravitational-wave bursts in the 10–50 Hz range, potentially observable by future detectors like the Einstein Telescope and Cosmic Explorer.
This paper introduces \castor, a fast and scalable transformer-based pipeline for detecting binary black hole gravitational-wave signals that achieves high sensitivity, outperforms adapted audio foundation models, and significantly reduces the computational cost of background estimation.
This paper demonstrates that by introducing a timelike regulating boundary to compute the on-shell Hamiltonian, various asymptotically AdS and flat spacetimes containing timelike singularities yield finite, positive energy contributions that ensure the total gravitational energy remains positive, with the notable exception of the non-singular AdS soliton.
This paper investigates how circulation in a rotating acoustic horizon enhances Hawking radiation flux and hardens its spectrum, revealing that the resulting temporal sparsity of emitted quanta is operationally dependent on the measurement clock and exhibits distinct behaviors between geometric benchmarks and greybody-corrected calculations.
This paper derives the stability conditions for static, spherically symmetric black holes with scalar hair in general quartic-quintic GLPV theories, revealing that while generic non-degenerate branches are locally unstable or degenerate, specific Horndeski-compatible deformations of scalar-Gauss-Bonnet black holes can satisfy all no-ghost and gradient-stability requirements.
This paper presents a NICER-based analysis of the neutron star PSR J0614-3329 that derives an equatorial circumferential radius of 9.88–12.77 km using a three-hot-spot model, while noting challenges in jointly fitting NICER and XMM-Newton data and discussing the resulting constraints on dense matter properties.
This paper investigates strong cosmic censorship for electrically neutral black holes in a Chaplygin-like dark fluid, demonstrating that while potential violations are confined to a narrow near-extremal region, the spectral gap governing stability is controlled by a complex interplay of de Sitter, photon-sphere, and Cauchy-horizon modes as the effective cosmological scale increases.
This paper proposes a perturbative framework for inflation driven by a complex inflaton with a non-Hermitian potential, which preserves standard CMB predictions while inducing a distinctive suppression in the high-frequency gravitational-wave spectrum via non-unitary evolution and geometric reheating near the end of inflation.
This paper investigates logarithmic quantum corrections to the entropy of near-extremal rotating black holes in three, four, and five dimensions, focusing on rotational zero modes to confirm agreement with microscopic descriptions for BTZ black holes, identify an additional correction by treating the cosmological constant as independent, and explicitly construct zero modes for the five-dimensional BMPV black hole to evaluate temperature-dependent entropy corrections.