MASS-SPECTRUM AND BOUNDS ON THE COUPLINGS IN YUKAWA MODELS WITH MIRROR-FERMIONS

被引:7
作者
LIN, L
MUNSTER, G
PLAGGE, M
MONTVAY, I
WITTIG, H
FRICK, C
TRAPPENBERG, T
机构
[1] UNIV MUNSTER, INST THEORET PHYS 1, W-4400 MUNSTER, GERMANY
[2] DESY, W-2000 HAMBURG 52, GERMANY
[3] HLRZ, W-5170 JULICH, GERMANY
关键词
D O I
10.1016/0920-5632(93)90294-G
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The SU(2)L x SU(2)R symmetric Yukawa model with mirror-fermions in the limit where the mirror-fermion is decoupled is studied both analytically and numerically. The bare scalar self-coupling lambda is fixed at zero and infinity. The phase structure is explored and the relevant phase transition is found to be consistent with a second order one. The fermionic mass spectrum close to that transition is discussed and a first non-perturbative estimate of the influence of fermions on the upper and lower bounds on the renormalized scalar self-coupling is given. Numerical results are confronted with perturbative predictions.
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收藏
页码:647 / 653
页数:7
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