On partially frustrated systems

Abstract
We consider the effects of partial frustration, i.e. frustration in a restricted number of dimensions ; they are investigated in a typical model, the stacked triangular antiferromagnetic Ising model. For this purpose we studied its quantum equivalent, the 2D-triangular model with a transverse field, through finite size analysis. They both exhibit true long range order. These considerations are extended to the non-Ising case with in mind possible application to the discotic phases of liquid crystals