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.

⚛️ general relativity

Gravitational emissions and light curves of quasi-periodic orbits in Schwarzschild spacetime embedded in a Dehnen-type dark matter halo

This study investigates strictly closed timelike orbits in a Schwarzschild spacetime embedded within a Dehnen-type dark matter halo, demonstrating how dark matter parameters amplify orbital scales and induce phase lags in gravitational waves while creating distinct signatures in electromagnetic light curves to enable multi-messenger detection of dark matter properties.

Shijie Tan, Chunhua Jiang, Dan Li, Shiyang Hu, Chen Deng, Wenbin Lin2026-04-16
⚛️ high-energy theory

Bipartite entanglement harvesting with multiple detectors

This paper demonstrates that bipartite entanglement harvesting from a quantum vacuum using multiple Unruh-DeWitt detectors can be efficiently analyzed via a linearly scaling submatrix, revealing that increasing the number of detectors not only maximizes harvested entanglement in specific configurations but also broadens the operational ranges for energy gaps and separations.

Santeri Salomaa, Esko Keski-Vakkuri, Sergi Nadal-Gisbert2026-04-16
⚛️ general relativity

Revisiting Thermodynamics of the Hayward Black Holes and Exploring Binary Merger Bounds

This paper revisits the thermodynamics of Hayward black holes in asymptotic flat spacetime to derive a novel entropy formula with logarithmic corrections, analyze their phase structure, and establish bounds on the final mass following the head-on merger of two equal-mass black holes while ensuring the validity of the second law of thermodynamics.

Neeraj Kumar, Ankur Srivastav, Phongpichit Channuie2026-04-16
⚛️ high-energy theory

Gravitational Sommerfeld Effects: Formalism, Renormalization, and Perturbation to O(G10)O(G^{10})

This paper develops a systematic worldline effective field theory framework to compute gravitational Sommerfeld factors for binary inspirals with tidal effects, deriving closed-form expressions and analytically solving for the magnitude and phase of the factor up to O(G10)O(G^{10}) while establishing a new renormalization group equation for radiative multipole moments to improve waveform resummation.

Chih-Hao Chang, Chia-Hsien Shen, Zihan Zhou2026-04-16
⚛️ high-energy theory

All-order structure of static gravitational interactions and the seventh post-Newtonian potential

This paper derives a closed formula for computing static post-Newtonian corrections to two-body gravitational dynamics at any odd order using a correlation function framework and Z2\mathbb{Z}_2 symmetry, which is applied to successfully calculate the seventh-order potential and confirm its agreement with diagrammatic factorization theorem results.

Giacomo Brunello, Manoj K. Mandal, Pierpaolo Mastrolia, Raj Patil, Matteo Pegorin, Sid Smith, Jan Steinhoff2026-04-16
⚛️ general relativity

Numerical stability of the Hyperbolic Formulation of the Constraint equations for T3\mathbb{T}^3 cosmological space-times

This paper investigates the numerical stability of an algebraic-hyperbolic formulation of the Einstein constraint equations for T3\mathbb{T}^3 cosmological space-times using a pseudo-spectral method, revealing that while the scheme suffers from unavoidable instabilities near FLRW space-times, it can be stable for Gowdy space-times and specific subclasses, offering a potential new approach for computing inhomogeneous initial data.

Alejandro Estrada-Llesta, Cristhian Martinez-Duarte, Leon Escobar-Diaz2026-04-15