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.

⚛️ general relativity

Polarized Equatorial Emission around Kerr Black Holes with Synchronized Scalar Hair. I. Direct images

This paper investigates the polarization of direct images from accretion disks around rotating Kerr black holes with synchronized scalar hair, revealing that the massive scalar field induces a dephasing in the polarization vector's twist—most notably in weakly scalarized solutions—and that vertical magnetic fields at high inclinations can cause a characteristic reversal in this twist direction.

Valentin O. Deliyski, Galin N. Gyulchev, Daniela D. Doneva, Petya G. Nedkova, Stoytcho S. Yazadjiev2026-05-06

🔢 mathematics

Can wormholes have vanishing Love numbers?

This paper demonstrates that in a strictly static $R=0$ spacetime wormhole, the magnetic-type tidal Love number for $\ell=2$ vanishes under axial gravitational perturbations when the solution is approximated to linear order in the geometry's regularisation parameter.

Shauvik Biswas2026-05-06

⚛️ high-energy theory

Squeezed-state radiation in shockwave scattering: QCD-Gravity double copy

This paper demonstrates that multi-gluon and multi-graviton radiation in strong field shockwave scattering can be modeled as generalized Susskind-Glogower squeezed coherent states via the QCD-Gravity double copy, revealing that large squeezing parameters in nearly minimal uncertainty configurations could produce gravitational wave quantum noise exceeding the sensitivity of current and future detectors.

Anna M. Staśto, Himanshu Raj, Raju Venugopalan2026-05-06

⚛️ general relativity

Late-time tails for linear waves on radially symmetric stationary spacetimes of two space dimensions

This paper establishes that solutions to the linear wave equation on radially symmetric stationary perturbations of (2+1)-dimensional Minkowski space exhibit late-time tails decaying as $u^{-1/2}v^{-1/2}$ by extending $r^p$ -weighted energy estimates and adapting physical space techniques from prior work on Schwarzschild spacetime.

Onyx Gautam2026-05-06

⚛️ general relativity

Non-radial pulsations of gravitationally coupled two-fluid neutron stars in general relativity

This paper establishes a fully general relativistic framework for analyzing non-radial polar oscillations in gravitationally coupled two-fluid neutron stars by deriving the necessary perturbation equations and boundary conditions, then numerically computing mode spectra to classify fundamental and pressure modes based on their fluid character.

Ankit Kumar, Daniel A. Caballero, Hajime Sotani, Nicolás Yunes2026-05-06

⚛️ general relativity

Scalar bosonic oscillator fields in LV-wormholes

This paper investigates the quantum dynamics of scalar bosonic oscillator fields in a Lorentz-violating wormhole spacetime, demonstrating how a nonminimally coupled vector background generates an effective interaction that yields a discrete, symmetric energy spectrum governed by curvature and Lorentz-violation parameters within a confluent Heun framework.

Omar Mustafa, Abdullah Guvendi2026-05-06

⚛️ general relativity

Novel Realizations of Warp Drive Spacetimes as Solutions of General Relativity

This paper critically examines the kinematics and constraints of Alcubierre and Natário warp drive models, analyzes their instabilities, and proposes a generalized relativistic framework incorporating spatial curvature and tilted fluid flows to link warp field dynamics with cosmological solutions.

Thomas Buchert, Antony Frackowiak2026-05-06

⚛️ general relativity

Total transmission modes in draining bathtub model with vorticity

This paper numerically investigates total transmission modes in the draining bathtub model with vorticity using the Chebyshev-Lobatto pseudospectral method, revealing that the spectra can exhibit both positive and negative imaginary parts depending on parameters, with higher overtones displaying extreme sensitivity and pronounced spectral mobility.

Zhe Yu, Liang-Bi Wu2026-05-06

⚛️ general relativity

Shadow of a Noncommutative Thin-Shell Gravastar

This paper proposes a stable, spherically symmetric thin-shell gravastar model within noncommutative geometry, constructed by matching a de Sitter interior to a noncommutative Schwarzschild exterior, and demonstrates that noncommutative effects significantly influence photon behavior and provide a viable alternative to charged black holes.

M. A. Anacleto, A. T. N. Silva, L. Casarini2026-05-06

⚛️ general relativity

Minimum lifetime of a black hole

This paper derives lower bounds on the lifetime of evaporating black holes by analyzing the energy cost of entanglement purification, finding that while the purification time scales as $M_0^4/\hbar^{3/2}$ under standard assumptions, it becomes exponentially long in the initial black hole area if a Planck mass remnant is assumed to be metastable, implying the existence of a white-hole remnant that slowly releases information.

Eugenio Bianchi, Matthew Brandsema, Kenneth Czuprynski, Daniel E. Paraizo2026-05-06

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