Andrea Shindler

Transition regionA.S; Bär, Necco, Schaefer: 2008a =0.08fm L a= 24 m =6MeVLeading orderS (0)2 =S (0)2M+S (0)2∂π→S (0)2M= − Σ 2d 4 xTrM † U 0 + U † 0 M ,S (0)2∂π= 1 4d 4 xTr [∂ µ ξ(x)∂ µ ξ(x)]Next-to-leading orderZ = Nd [U 0 ]e − S (0)2M(Σ eff )× Zπ [U 0 ]Z π [U 0 ]=N1+W a 2 V 2Tr U 0 + U † 2aW ΣV0 +F 2TrM † U 0 + U † 0 M TrU 0 + U † 0 ,Monday, January 17, 2011