Year: 2026
Type: preprint
Abstract: We determine the four-loop hard-scale matching correction to the pressure of the gluon plasma at high temperature. This result completes the long-standing calculation through $\mathcal{O}(g_s^6)$, where $g_s$ is the strong coupling. Our result agrees, within uncertainties, with the value obtained in arXiv:1204.6184 by fitting the perturbative series to continuum-extrapolated lattice data, thereby providing the first direct test of the weak-coupling expansion at this order.
Source: arXiv (Cornell University)
Authors: Chala, Mikael, Gil, Luis, Miras, Javier López
Institution: Universidad de Granada
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7222917384