gr-qc papers | Gist.Science

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

Proper-time functional renormalization in $O(N)$ scalar models coupled to gravity

This paper investigates the scaling solutions and critical properties of an $O(N)$ scalar field coupled to gravity in three and four dimensions using a proper-time functional renormalization group framework, confirming most qualitative and quantitative results from previous effective average action studies while highlighting specific differences in finite and large $N$ limits depending on the improvement scheme.

Alfio M. Bonanno, Emiliano M. Glaviano, Gian Paolo Vacca2026-05-12

⚛️ general relativity

The Noise of Vacuum

This paper proposes a vacuum decay model where primordial curvature perturbations arise from stochastic thermal noise rather than inflaton quantum fluctuations, naturally solving the horizon and flatness problems while predicting a zero tensor-to-scalar ratio and observationally viable Gaussian spectra.

Gabriela Barenboim (IFIC)2026-05-12

⚛️ high-energy theory

Weyl double copy in Lifshitz spacetimes

This paper validates a regularization prescription for the Weyl double copy by demonstrating its consistency with the Kerr-Schild formulation across three distinct Lifshitz black hole examples that previously posed challenges for reconciling the two classical double copy approaches.

Gokhan Alkac, Mehmet Kemal Gumus, Mehmet Ali Olpak2026-05-12

⚛️ high-energy theory

Traversable wormhole with double trace deformations via gravitational shear and sound channels

This paper demonstrates that double trace deformations between the boundaries of an AdS $_5$ black brane induce gravitational shear and sound channel perturbations that violate the Averaged Null Energy Condition, thereby creating a traversable wormhole whose duration and decay behavior depend on the sound speed and coupling configurations.

Fitria Khairunnisa, Hadyan Luthfan Prihadi, M. Zhahir Djogama, Donny Dwiputra, Freddy Permana Zen2026-05-12

⚛️ nuclear theory

Tracing the Trace Anomaly of Dense Matter inside Neutron Stars

This paper establishes quasi-universal relations linking the trace anomaly profile in neutron stars to their macroscopic properties, utilizing observational data from specific pulsars and multimessenger constraints to estimate the central trace anomaly of a canonical neutron star.

Shiyue Ren, Lap-Ming Lin2026-05-12

⚛️ general relativity

5D Rotating Black Holes as dark matter in Dark Dimension Scenario: Hawking Radiation versus the Memory Burden Effect

This paper proposes that five-dimensional primordial rotating black holes, whose lifetimes are significantly extended by the "dark dimension" scenario and the memory burden effect, can survive to the present day and potentially account for all of the universe's dark matter.

George K. Leontaris, George Prampromis2026-05-12

⚛️ general relativity

Static plane symmetric solutions in $f(Q)$ gravity

This paper systematically investigates static plane symmetric solutions in $f(Q)$ gravity, deriving vacuum spacetimes equivalent to Taub-(anti) de Sitter geometries and analyzing how singular shells and finite-thickness slabs with isotropic matter influence the internal pressure distribution and structural stability, particularly within quadratic $f(Q)$ models.

Jun-Qin Long, Rui-Hui Lin, Xiang-Hua Zhai2026-05-12

⚛️ general relativity

Cosmological long-wavelength solutions in non-adiabatic multi-fluid systems

This paper develops a nonlinear formulation of cosmological perturbations on superhorizon scales for non-adiabatic multi-fluid systems using the ADM formalism and spatial gradient expansion, explicitly constructing solutions that incorporate both adiabatic and entropy modes while analyzing their time evolution under different initial conditions.

Hayami Iizuka, Tomohiro Harada2026-05-12

⚛️ general relativity

The new generation lunar gravitational wave detectors: sky map resolution and joint analysis

This paper demonstrates that the proposed lunar-based Crater Interferometry Gravitational-wave Observatory (CIGO) and its upgraded tetrahedral configuration (TCIGO) can significantly outperform existing space-based missions like TianQin and LISA in sky map resolution for monochromatic sources in the 0.1–10 Hz band, provided lunar noise is effectively mitigated.

Xiaolin Zhang, Chengye Yu, Haoran Li, Sobhan Kazempour, Mingqiu Li, Sichun Sun2026-05-12

⚛️ general relativity

Analytical solution of traversable wormholes in the presence of positive cosmological constant

This paper presents an analytical solution for traversable wormholes with a positive cosmological constant using the gravitational decoupling method, revealing a configuration with both a standard and a cosmological throat that satisfies the flare-out condition and allows for safe human passage despite violating the null energy condition.

Rajesh Karmakar, Xian-Hui Ge2026-05-12

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gr-qc

Proper-time functional renormalization in O(N)O(N)O(N) scalar models coupled to gravity

The Noise of Vacuum

Weyl double copy in Lifshitz spacetimes

Traversable wormhole with double trace deformations via gravitational shear and sound channels

Tracing the Trace Anomaly of Dense Matter inside Neutron Stars

5D Rotating Black Holes as dark matter in Dark Dimension Scenario: Hawking Radiation versus the Memory Burden Effect

Static plane symmetric solutions in f(Q)f(Q)f(Q) gravity

Cosmological long-wavelength solutions in non-adiabatic multi-fluid systems

The new generation lunar gravitational wave detectors: sky map resolution and joint analysis

Analytical solution of traversable wormholes in the presence of positive cosmological constant

Proper-time functional renormalization in $O(N)$ scalar models coupled to gravity

Static plane symmetric solutions in $f(Q)$ gravity