⚛️ Category

gr-qc

3949 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.

⚛️ high-energy theory

Is the w0waw_0w_aCDM cosmological parameterization evidence for dark energy dynamics partially caused by the excess smoothing of Planck PR4 CMB anisotropy data?

This paper investigates whether the Planck PR4 CMB data's mild preference for dynamical dark energy in the w0waw_0w_aCDM model is partially driven by residual excess smoothing in the anisotropy spectra, finding that while PR4 data reduce the CMB lensing anomaly compared to PR3, the observed evidence for evolving dark energy may still be influenced by these residual smoothing effects.

Chan-Gyung Park, Javier de Cruz Perez, Bharat Ratra2026-04-07
🔭 astrophysics

Dispersion Measure Distribution of Unlocalized Fast Radio Bursts as a Probe of the Hubble Constant

This paper presents the first measurement of the Hubble constant (H0=73.8−12.3+14.0 km s−1 Mpc−1H_0 = 73.8^{+14.0}_{-12.3}~\mathrm{km\,s^{-1}\,Mpc^{-1}}) derived solely from the dispersion measure distribution of 2,124 unlocalized fast radio bursts, demonstrating their potential as a new cosmological probe that can constrain H0H_0 without requiring redshift information.

Yang Liu, Jun-Jie Wei, Puxun Wu, Xue-Feng Wu2026-04-07
⚛️ general relativity

Black Hole Persistence in New General Relativity

This paper investigates the persistence of black holes through a cosmological bounce in New General Relativity by analyzing a generalized McVittie spacetime, revealing that while the background evolution resembles a standard bounce, the local horizon dynamics are qualitatively altered and symmetry is disrupted at higher perturbative orders due to the theory's specific curvature renormalization and perturbation signs.

Balkar Yildirim, Alan Albert Coley, Diego Fernando López2026-04-07
⚛️ high-energy theory

Superradiant Suppression of Non-minimally Coupled Scalar fields for a Rotating Charged dS Black Hole in Conformal Weyl Gravity

This study analytically demonstrates that rotating charged de Sitter black holes in Conformal Weyl Gravity exhibit significant suppression of superradiant amplification for both massless and massive conformally coupled scalar fields compared to General Relativity, with the massive sector showing particularly strong exponential suppression in the cosmological region.

Owen Gartlan, Jacob March, Leo Rodriguez, Shanshan Rodriguez, Yihan Shen2026-04-07
⚛️ general relativity

Stationary Einstein-vector-Gauss-Bonnet black holes

This paper investigates spontaneously vectorized black holes in Einstein-vector-Gauss-Bonnet theory, identifying both electrically charged spherically symmetric and uncharged axially symmetric magnetic solutions with radial excitations, while characterizing the domain of existence for rotating variants as bounded by Kerr black holes, static symmetric solutions, and critical limits.

Burkhard Kleihaus (University of Oldenburg), Jutta Kunz (University of Oldenburg)2026-04-07
⚛️ general relativity

Galileon versus Quintessence: A comparative phase space analysis and late-time cosmic relevance

This paper presents a comparative phase space analysis showing that while standard Quintessence models with cosh potentials admit stable late-time accelerating attractors, the light mass Galileon model fails to produce such stable solutions for the considered potentials, suggesting that higher-order Galileon interactions are necessary to explain the observed cosmic acceleration.

Mohd Shahalam2026-04-07
⚛️ general relativity

Preliminary study on the impact of stress-energy tensor compared to scalar field in Nonminimal Derivative model

This preliminary study compares the Nonminimal Derivative Coupling models utilizing the trace of the stress-energy tensor (NMDC-T) and a real-valued scalar field (NMDC-phi) within incompressible stars, finding that the NMDC-T model's coupling parameters are less sensitive to variations in compactness and mass-radius relations than those of the NMDC-phi model.

Ilham Prasetyo, Bobby Eka Gunara, Agus Suroso2026-04-07