Towards quantitative precision in the chiral crossover: masses and fluctuation scales

Autor:	Helmboldt, Alexander J., Pawlowski, Jan M., Strodthoff, Nils
Rok vydání:	2014
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory
Zdroj:	Phys. Rev. D 91, 054010 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.91.054010
Popis:	We investigate the relation between the physical pion pole and screening masses and the mesonic fluctuation scale in low-energy QCD, which relates to the curvature of the mesonic effective potential. This relation is important for the correct relative weight of quantum, thermal and density fluctuations. Hence, it governs the location of phase boundaries as well as the phase structure of QCD. The identification of the correct physics scales is also primarily important for the correct adjustment of the parameters of effective models for low-energy QCD. It is shown that subject to an appropriate definition of the latter, all these scales agree at vanishing temperature, while they deviate from each other at finite temperature. Comment: 15 pages, 11 figures, 9 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1409.8414 Zobrazit plný text záznamu View this record from Arxiv