Phase transitions at T = 0 : S = 12XY model in a Z-field-renormalization group approach
作者： K.A. Penson , R. Jullien , P. Pfeuty
DOI: 10.1016/0304-8853(80)90865-3
关键词: Classical XY model 、 Field (physics) 、 Quadratic equation 、 Condensed matter physics 、 Renormalization group 、 Order (group theory) 、 Mathematical physics 、 Phase transition 、 Hexagonal crystal system 、 Physics
摘要: Abstract The new real-space renormalization-group method is applied at T = 0 to the S 1 2 XY model with z-field h in 1D and quadratic, triangular hexagonal lattices 2D. In no cases order was found a power-law behaviour of correlation functions 〈0|Sx0SxR|0〉 ∼R →∞ R-ηx postulated η x (D) D - for |h/J|
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