⚛️ Category

gr-qc

3256 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 Sensitivity Methodologies to Detect Radio Band Gravitational Waves

This paper proposes and evaluates four high-sensitivity observational methods, with the "Multiple Pulsars with Multiple Telescopes" (MPMT) approach proving most effective, to detect radio-band gravitational waves via the Gertsenshtein-Zeldovich effect in pulsar magnetospheres using FAST and SKA2-MID, potentially reaching characteristic strain sensitivities of 10−2310^{-23} for transient events and 10−3310^{-33} for stochastic backgrounds while offering a novel explanation for repeating fast radio bursts.

Wei Hong, Peng He, Tong-Jie Zhang, Shi-Yu Li, Pei Wang2026-03-31⚛️ gr-qc

Simulating Axion Electrodynamics in Magnetized Plasmas: Energy transfer in the inhomogeneous and strongly varying limit

This paper employs frequency- and time-domain simulations to characterize energy transfer from axion fields to magnetized plasmas in highly inhomogeneous environments, revealing efficient photon excitation, indirect Alfvén mode coupling, and energy transfer to sub-luminal plasma modes in localized under-densities.

Fabrizio Corelli, Estanis Utrilla Ginés, Enrico Cannizzaro, Andrea Caputo, Samuel J. Witte2026-03-31⚛️ hep-ph

Dynamical tidal response of neutron stars as a probe of dense-matter properties

This study demonstrates that while weak-interaction-driven bulk viscosity renders dissipative tidal effects undetectable, the conservative dynamical tidal response of neutron stars offers a promising gravitational-wave probe for constraining higher-order coefficients of the nuclear symmetry energy.

Abhishek Hegade K. R., Yumu Yang, Mauricio Hippert, Jacquelyn Noronha-Hostler, Jorge Noronha, Nicolás Yunes2026-03-31⚛️ gr-qc

Covariant Hamiltonian quantization of teleparallel equivalents to general relativity

This paper proposes a covariant Hamiltonian quantization framework for teleparallel equivalents of general relativity that utilizes non-singular field-strength Hamiltonians to avoid the frozen formalism of canonical general relativity, introducing a Tomonaga-Schwinger-type evolution equation without a preferred time coordinate as a new approach to nonperturbative quantum gravity.

David Chester, Vipul Pandey2026-03-31⚛️ gr-qc

Why Stellar Sequences Turn Over: Fixed Points, Instability, and Equation-of-State Universality

This paper reformulates stellar structure equations as a dynamical system to demonstrate that the maximum mass of stellar sequences corresponds to a fixed point in the relativistic regime, a framework that explains equation-of-state-insensitive relations and suggests that the pulsar J0740+6620 likely lies near this maximum only if a strong first-order phase transition occurs just above its central density.

Isaac Legred, Nicolas Yunes2026-03-31🔭 astro-ph

Optimized numerical evolution of perturbations across sharp background trajectory turns in multifield inflation

This paper introduces an efficient and scalable numerical method for evolving primordial scalar fluctuations that accurately tracks perturbations through sharp turns in multifield inflationary trajectories, enabling systematic exploration of spectral features in regimes that significantly depart from slow-roll dynamics.

Guillermo F. Quispe Peña, Johor D. Peñalba Quispitupa, José T. Gálvez Ghersi2026-03-31⚛️ gr-qc