Three-dimensional physics and the pressure of hot QCD

Autor:	Hietanen, A., Kajantie, K., Laine, M., Rummukainen, K., Schroder, Y.
Rok vydání:	2008
Předmět:	High Energy Physics - Lattice High Energy Physics - Phenomenology
Zdroj:	Phys.Rev.D79:045018,2009
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.79.045018
Popis:	We update Monte Carlo simulations of the three-dimensional SU(3) + adjoint Higgs theory, by extrapolating carefully to the infinite volume and continuum limits, in order to estimate the contribution of the infrared modes to the pressure of hot QCD. The sum of infrared contributions beyond the known 4-loop order turns out to be a smooth function, of a reasonable magnitude and specific sign. Unfortunately, adding this function to the known 4-loop terms does not improve the match to four-dimensional lattice data, in spite of the fact that other quantities, such as correlation lengths, spatial string tension, or quark number susceptibilities, work well within the same setup. We outline possible ways to reduce the mismatch. Comment: 14 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0811.4664 Zobrazit plný text záznamu View this record from Arxiv