A new RSOS restriction of the Zhiber-Mikhailov-Shabat model and Phi((1,5)) perturbations of non-unitary minimal models
Absztrakt:
The RSOS restriction of the Zhiber-Mikhailov-Shabat (ZMS) model is
investigated. It is shown that in addition to the usual RSOS
restriction, corresponding to Phi((1,2)) and Phi((2,1)) perturbations
of minimal CFT, there is another one which yields Phi((1,5))
perturbations of non-unitary minimal models. The new RSOS restriction
is carried out and the particular case of the minimal models M((3,10)),
M((3,14)) and M((3,16)) is discussed in detail. In the first two cases,
while the mass spectra of the two RSOS restrictions are the same, the
bootstrap systems and the detailed amplitudes are different. In the
third case, even the spectra of the two RSOS restrictions are
different. In addition, for M((3,10)) an interpretation in terms of the
tensor product of two copies of M((2,5)) is given. (C) 1997 Elsevier
Science B.V.