Autor:	Argyres, E. N., van Kessel, M. T. M., Kleiss, R. H. P.
Rok vydání:	2009
Předmět:	High Energy Physics - Theory
Zdroj:	Eur.Phys.J.C65:303-310,2010
Druh dokumentu:	Working Paper
DOI:	10.1140/epjc/s10052-009-1179-8
Popis:	The reality and convexity of the effective potential in quantum field theories has been studied extensively in the context of Euclidean space-time. It has been shown that canonical and path-integral approaches may yield different results, thus resolving the `convexity problem'. We discuss the transferral of these treatments to Minkowskian space-time, which also necessitates a careful discussion of precisely which field configurations give the dominant contributions to the path integral. In particular, we study the effective potential for the N=1 linear sigma model. Comment: 11 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0907.1174 Zobrazit plný text záznamu View this record from Arxiv