On the angular momentum and free energy of rotating gluon plasma

Abstract

We study the free energy and the angular momentum of rotating hot gluon matter using first-principle numerical simulations of the $\text{SU}(3)$ lattice Yang-Mills theory. We calculate the specific moment of inertia and the specific deformation of the gluon matter as, respectively, the leading and next-to-leading terms in a series in angular velocity over a broad range of temperatures and various spatial boundary conditions. We show that the specific deformation, similarly to the moment of inertia, takes negative values in a phenomenologically interesting region of temperatures above the phase transition and turns positive at higher temperatures.

Comments: 9 pages, 3 figures, Proceedings of the XXVIth International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", 15-20 September 2025, Dubna, Russia