https://doi.org/10.1007/s100510051154
Phase transitions in generalized chiral or Stiefel's models
Institut für Theoretische Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin,
Germany
Received:
7
October
1999
Published online: 15 June 2000
We study the phase transition in generalized
chiral or Stiefel's models using Monte Carlo simulations.
These models are characterized by a breakdown of symmetry 
.
We show that the phase transition is clearly
first order for 
when P=N and 
,
contrary to predictions based
on the renormalization group in 
expansion but in agreement
with a recent non perturbative renormalization group approach.
PACS: 05.50.+q – Lattice theory and statistics (Ising, Potts, etc.) / 75.10.Hk – Classical spin models / 05.70.Fh – Phase transitions: general studies
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
