Articoli in riviste
| Exact results for quantum chains with multisite interactions |
| Turban L. |
| Journal of Physics A: Mathematical and General 18 (1985) 2313 |
| DOI : 10.1088/0305-4470/18/12/029 |
Generalised spin-1/2 and Potts quantum chains with m- (n-) site interactions for the z(x) component of the site variables are shown to be self-dual. Through duality, with m arbitrary, n=2 versions of the models are transformed into m independent Ising or Potts chains in a transverse field, allowing one to get the exact values of the critical exponents for any m. |