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

被引:6
作者
ALONSO, JL [1 ]
LESMES, F [1 ]
RIVAS, E [1 ]
BOUCAUD, P [1 ]
机构
[1] UNIV PARIS 11, PHYS THEOR & HAUTES ENERGIES LAB, F-91405 ORSAY, FRANCE
关键词
D O I
10.1016/0370-2693(94)90519-3
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the phase structure of the chiral SU(2) x SU(2) scalar-fermion model on the lattice using the Zaragoza proposal for chiral fermions. The numerical result agrees with an analytic study based on the use of weak and strong Yukawa coupling expansions combined with the mean-field approach. The phase diagram consists of four phases: paramagnetic (PM), ferromagnetic (FM), antiferromagnetic (AFM) and ferrimagnetic (FI). The transition lines separating these four phases intersect at one. quadruple point.
引用
收藏
页码:75 / 80
页数:6
相关论文
共 23 条
[1]  
Alonso J. L., 1990, Nuclear Physics B, Proceedings Supplements, V17, P461, DOI 10.1016/0920-5632(90)90293-4
[2]   A LATTICE GLOBAL CHIRAL INVARIANT REGULARIZATION OF THE CHIRAL SCHWINGER MODEL [J].
ALONSO, JL ;
CORTES, JL ;
RIVAS, E ;
BOVCAUD, P .
MODERN PHYSICS LETTERS A, 1990, 5 (04) :275-280
[3]   CHIRAL YUKAWA MODELS ON THE LATTICE AND DECOUPLING [J].
ALONSO, JL ;
BOUCAUD, P ;
CORTES, JL ;
RIVAS, E .
PHYSICAL REVIEW D, 1991, 44 (10) :3258-3263
[4]   MASSLESS DECOUPLED DOUBLERS - CHIRAL YUKAWA MODELS AND CHIRAL GAUGE-THEORIES [J].
ALONSO, JL ;
CORTES, JL ;
LESMES, F ;
BOUCAUD, P ;
RIVAS, E .
NUCLEAR PHYSICS B, 1992, :171-181
[5]   THE S-PARAMETERS, U-PARAMETERS AND DELTA-RHO-PARAMETERS IN THE ZARAGOZA PROPOSAL FOR LATTICE CHIRAL GAUGE FERMIONS [J].
ALONSO, JL ;
BOUCAUD, P ;
CORTES, JL ;
LESMES, F ;
RIVAS, E .
NUCLEAR PHYSICS B, 1993, 407 (02) :373-384
[6]   FERMION-HIGGS MODEL WITH REDUCED STAGGERED FERMIONS [J].
BOCK, W ;
SMIT, J ;
VINK, JC .
PHYSICS LETTERS B, 1992, 291 (03) :297-305
[7]   CAN THE COUPLINGS IN THE FERMION-HIGGS SECTOR OF THE STANDARD MODEL BE STRONG [J].
BOCK, W ;
FRICK, C ;
SMIT, J ;
VINK, JC .
NUCLEAR PHYSICS B, 1993, 400 (1-3) :309-346
[8]   PHASE-DIAGRAM OF A LATTICE SU(2) X SU(2) SCALAR-FERMION MODEL WITH NAIVE AND WILSON FERMIONS [J].
BOCK, W ;
DE, AK ;
JANSEN, K ;
JERSAK, J ;
NEUHAUS, T ;
SMIT, J .
NUCLEAR PHYSICS B, 1990, 344 (01) :207-237
[9]   NEUTRINOS ON THE LATTICE - THE REGULARIZATION OF A CHIRAL GAUGE-THEORY [J].
BORRELLI, A ;
MAIANI, L ;
ROSSI, GC ;
SISTO, R ;
TESTA, M .
NUCLEAR PHYSICS B, 1990, 333 (02) :335-356
[10]   STRONG COUPLING AND MEAN FIELD METHODS IN LATTICE GAUGE-THEORIES [J].
DROUFFE, JM ;
ZUBER, JB .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1983, 102 (1-2) :1-119