PHASE-DIAGRAM OF AN SU(2)XSU(2) SCALAR-FERMION MODEL WITH MASSLESS DECOUPLED DOUBLERS

Authors
ALONSO JL LESMES F RIVAS E BOUCAUD P
Citation
Jl. Alonso et al., PHASE-DIAGRAM OF AN SU(2)XSU(2) SCALAR-FERMION MODEL WITH MASSLESS DECOUPLED DOUBLERS, Physics letters. Section B, 329(1), 1994, pp. 75-80
Citations number
23
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
329
Issue
1
Year of publication
1994
Pages
75 - 80
Database
ISI
SICI code
0370-2693(1994)329:1<75:POASSM>2.0.ZU;2-9
Abstract
We present the phase structure of the chiral SU(2) x SU(2) scalar-ferm ion model on the lattice using the Zaragoza proposal for chiral fermio ns. The numerical result agrees with an analytic study based on the us e of weak and strong Yukawa coupling expansions combined with the mean -field approach. The phase diagram consists of four phases: paramagnet ic (PM), ferromagnetic (FM), antiferromagnetic (AFM) and ferrimagnetic (FI). The transition lines separating these four phases intersect at one. quadruple point.