⚛️ Category

gr-qc

4428 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.

⚛️ general relativity

Stability, Tidal Deformability, and Statistical Constraints of Anisotropic Compact Stars with a Generalized Polytropic Equation of State : Modelling Observation with Buchdahl Space-Time

This paper constructs a physically viable anisotropic compact star model using the Buchdahl space-time and a generalized polytropic equation of state, which is validated against thirty-eight observed candidates and MCMC analysis to demonstrate its stability, hydrostatic equilibrium, and statistically constrained tidal deformability.

Ritabrata Biswas, Arpan Bhattacharya, Subhajit Pal2026-10-23
⚛️ general relativity

The subcritical accelerating Schwarzschild-Bertotti-Robinson family

This paper establishes that the finite-ℓ\ell neutral Alekseev--Astorino Schwarzschild--Bertotti--Robinson family is equivalent to the subcritical branch of the accelerating Schwarzschild--Bertotti-Robinson solution, demonstrating that the Astorino parameter ℓ\ell specifically parametrizes subcritical acceleration (∣A∣<∣B∣|A|<|B|) rather than representing an independent black hole degree of freedom.

Kenneth Hong2026-10-23
⚛️ general relativity

Decoherence of the quantum superradiant cloud from graviton emission

This paper demonstrates that graviton emission from a rotating black hole's superradiant bosonic cloud induces decoherence by suppressing interference between configurations of different amplitudes while preserving phase-sign interference, effectively transitioning the quantum state into a classical statistical mixture of coherent states well before the black hole significantly spins down.

Lingyun Fu, Hidetoshi Omiya, Takahiro Tanaka, Hui-Yu Zhu2026-10-23
⚛️ general relativity

Perturbations, eikonal limit and Hawking radiation of diverse external fields in a non-minimal charged black hole

This paper investigates the quasinormal modes, greybody factors, and Hawking radiation of massless scalar, electromagnetic, and Dirac fields on a non-minimal Einstein–Yang–Mills black hole, revealing that while higher overtones exhibit strong sensitivity to the non-minimal coupling ξ\xi and large multipole numbers follow a universal eikonal description, the overall Hawking emission is modulated by both ξ\xi-dependent transmission probabilities and temperature variations.

Yinan Jia, Zhen-Hao Yang, Xiao-Mei Kuang2026-10-23
⚛️ high-energy theory

Big Crunching Your Big Bang: Doubly Warped Time-Dependent Type II Flux Backgrounds and Scale Separation

This paper constructs three analytic, doubly warped, time-dependent cosmological solutions in massless type IIA supergravity that undergo Big Bang-to-Big Crunch evolution, exhibit temporary scale separation near their maximum expansion, and completely break all supersymmetry without requiring localized sources.

Kazi Fahim Reza Arko, Walid Hasan, M. Fahim Hoque, Ahmed Rakin Kamal2026-10-23
⚛️ general relativity

Quintaverse-Phantiverse Cosmologies in f(Q,C)f(Q,C) Gravity: a Non-coincident Geometrical Origin of Cosmic Acceleration

This paper investigates the asymptotic dark energy sectors of quadratic f(Q,C)f(Q,C) gravity, demonstrating that late-time cosmic acceleration arises as an intrinsic geometrical effect without independent dark energy, while identifying stable "Quintaverse" and "Phantiverse" attractor solutions and analyzing their cosmographic evolution.

Hamid Shabani, Avik De2026-10-23
⚛️ general relativity

Accurate initial data for Cauchy-characteristic evolution

This paper identifies incorrect initial angular coordinates as the source of spurious transients in Cauchy-characteristic evolution (CCE) and proposes a new initial data construction that matches Cauchy worldtube data to second order, thereby eliminating unphysical modulations and enabling more accurate gravitational-wave template generation for future catalogs.

Guido Da Re, Keefe Mitman, Leo C. Stein, Nils Deppe, Himanshu Chaudhary, Dongze Sun, Michael Boyle, Kyle C. Nelli, Mark (…)2026-10-23