Hep-Th, or high-energy theoretical physics, explores the fundamental building blocks of our universe and the forces that govern them. Researchers in this field use complex mathematics to understand everything from subatomic particles to the behavior of black holes, often pushing the boundaries of what we know about space and time.

At Gist.Science, we monitor the arXiv repository to ensure you stay ahead of the curve in this rapidly evolving discipline. For every new preprint uploaded to arXiv under this category, our team generates both accessible plain-language overviews and detailed technical summaries, making cutting-edge research understandable regardless of your background.

Below are the latest papers in high-energy theoretical physics, curated to help you navigate the most significant recent discoveries.

Stimulated absorption of single gravitons: First light on quantum gravity

This paper argues that detecting stimulated absorption of single gravitons in massive quantum resonators, correlated with LIGO gravitational wave observations, would provide the first experimental window into quantum gravity by probing the quantized interaction between gravity and matter, drawing parallels to the historical development of early quantum theory.

Victoria Shenderov (Department of Physics, Stevens Institute of Technology, Hoboken, NJ, Cornell University, Ithaca, NY), Mark Suppiah (Department of Physics, Stevens Institute of Technology, Hoboken (…)2026-03-25⚛️ gr-qc

Late-time tails in nonlinear evolutions of merging black holes

Using high-accuracy numerical relativity simulations, this paper confirms the presence of late-time gravitational-wave tails in merging black holes, demonstrating that these signals are significantly amplified by eccentricity and align strikingly with perturbative predictions, thereby validating black hole perturbation theory even in nonlinear regimes and suggesting the tails may be detectable by gravitational-wave observatories.

Marina De Amicis, Hannes Rüter, Gregorio Carullo, Simone Albanesi, C. Melize Ferrus, Keefe Mitman, Leo C. Stein, Vitor Cardoso, Sebastiano Bernuzzi, Michael Boyle, Nils Deppe, Lawrence E. Kidder, Jord (…)2026-03-25🔢 math-ph

Orthosymplectic Quivers: Indices, Hilbert Series, and Generalised Symmetries

This paper investigates generalised global symmetries in 3d N=4\mathcal{N}=4 orthosymplectic quiver gauge theories by identifying a D8D_8 categorical symmetry web and introducing an improved prescription for computing Coulomb branch Hilbert series that incorporates discrete symmetry fugacities and background magnetic fluxes to ensure consistency across various global forms and mirror dualities.

William Harding, Noppadol Mekareeya, Zhenghao Zhong2026-03-25⚛️ hep-th

Quantum Calabi-Yau Black Holes and Non-Perturbative D0-brane Effects

This paper computes the supersymmetric entropy of general BPS black holes in 4d N=2\mathcal{N}=2 supergravity from Type IIA string theory on Calabi-Yau threefolds, revealing that all-genera α\alpha'-corrections (equivalent to D0-brane effects) induce both perturbative and non-perturbative contributions to the entropy, except in specific gauge configurations where the effects vanish, a finding supported by a semiclassical analysis of particle dynamics in the near-horizon AdS2×S2_2\times \mathbf{S}^2 geometry.

Alberto Castellano, Dieter Lüst, Carmine Montella, Matteo Zatti2026-03-25⚛️ hep-th

Challenging Spontaneous Quantum Collapse with XENONnT

Using low-energy electronic recoil data from the first science run of the XENONnT detector and a novel model accounting for charge cancellation effects, researchers established world-leading constraints on spontaneous quantum collapse models that exclude the original parameters of the Continuous Spontaneous Localization theory for the first time.

E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, S. R. Armbruster, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. (…)2026-03-25⚛️ nucl-ex