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.

Quasinormal modes and AdS/CFT correspondence of a rotating BTZ-like black hole in the Einstein-bumblebee gravity

This paper derives exact quasinormal modes for massive scalar, fermionic, and vector perturbations around a rotating BTZ-like black hole in Einstein-bumblebee gravity, revealing that the Lorentz symmetry breaking parameter slows field decay by affecting only the imaginary parts of the frequencies while preserving the standard BTZ real parts and confirming the validity of the AdS/CFT correspondence through universal conformal weights.

Fangli Quan, Zhong-Wu Xia, Rui Ding, Qiyuan Pan, Jiliang Jing2026-03-27⚛️ gr-qc

Implementing Bell causality in Quantum Sequential Growth

This paper investigates implementations of quantum Bell causality in causal set quantum gravity, demonstrating that natural operator orderings force the transition algebra to be commutative, while a size-dependent ordering yields new constraints but still faces significant hurdles in constructing non-trivial non-commutative representations.

Ritesh Srivastava, Sumati Surya2026-03-27⚛️ gr-qc

Particle Physics and Gravitational Waves as complementary windows on the Universe

This perspectives article explores the synergies between particle physics and gravitational wave astronomy, highlighting how next-generation gravitational wave measurements can provide complementary insights into dense matter, dark matter, early Universe phase transitions, and cosmological evolution that extend beyond the reach of current and future particle colliders.

Steven D. Bass, Laura Baudis, Gianfranco Bertone, Oliver Buchmueller, Babette Döbrich, Reinhard Genzel, Anne M. Green, Klaus Helbing, Michèle Heurs, Karl Jakobs, Markus Klute, Samaya Nissanke, Hir (…)2026-03-27⚛️ nucl-th

Structural Analysis of a Scalar-Tensor Realization of Interacting Dark Energy

This paper investigates a density-driven interacting dark energy model within a conformally coupled scalar-tensor framework, finding that current cosmological data show no significant preference over $\Lambda$ CDM and constrain the model to a hierarchical regime where the scalar field remains heavier than the Hubble scale, with the choice of a fixed versus variable activation index significantly affecting the posterior parameter constraints.

Pradosh Keshav MV, NS Kavya, Kenath Arun2026-03-27⚛️ gr-qc

An effective cosmological constant as black hole primary hair

This paper demonstrates that within Generalized Proca theories, treating action coefficients as free parameters reveals a broader solution space where static, spherically symmetric black holes possess primary hair and naturally exhibit a cosmological constant as an integration constant, even without a bare cosmological term.

Christos Charmousis, Pedro G. S. Fernandes, Mokhtar Hassaine2026-03-27⚛️ gr-qc

Repetitive Penrose Process in Kerr-Taub-NUT black hole spacetime

This paper investigates the repetitive Penrose process in Kerr-Taub-NUT black hole spacetime, demonstrating that while the gravitomagnetic charge expands the event horizon and ergosphere, it simultaneously reduces the extractable energy, and provides numerical results on the iterative evolution of the black hole's parameters under this process.

Mirzabek Alloqulov, Bobomurat Ahmedov, Chengxun Yuan2026-03-27⚛️ gr-qc

Exact lambdavacuum solutions in higher dimensions

This paper presents exact solutions to the $(n+2)$ -dimensional Einstein Field Equations with a non-zero cosmological constant, derived using commuting constant matrices, which generalize well-known spacetimes like de Sitter, Anti-de Sitter, and Nariai metrics to higher dimensions and include applications in cosmology.

I. A. Sarmiento-Alvarado, P. Wiederhold, T. Matos2026-03-27⚛️ gr-qc

Interior of Schwarzschild in semiclassical gravity

By incorporating semiclassical quantum effects that bound matter pressure, this paper demonstrates that gravitational collapse prevents the formation of a traditional black hole interior, instead resulting in a core with negative energy where matter density reaches the Planck scale as the star approaches the Schwarzschild radius.

Yoshinori Matsuo2026-03-27⚛️ hep-th

A Graphical Coaction for FRW Wavefunction Coefficients

This paper demonstrates that the wavefunction of the universe for conformally coupled scalars in power-law FRW cosmologies satisfies a graphical coaction that reveals its complete analytic structure through acyclic minors of Feynman graphs, thereby reproducing known kinematic flows and simplifying the extraction of discontinuities across all particle multiplicities and loop orders.

Andrew McLeod, Andrzej Pokraka, Lecheng Ren2026-03-27⚛️ hep-th

Perturbative unitarity of fractional field theories and gravity

Motivated by quantum gravity on multi-scale geometries, this paper demonstrates that fractional field theories with a self-adjoint kinetic term possess a perturbative unitary spectrum consisting solely of standard asymptotic states, while all other modes manifest as purely virtual particles with complex masses.

Gianluca Calcagni, Fabio Briscese2026-03-27⚛️ hep-th

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