It has been proposed,that the chiral continuum limit of 2-flavour QCD with Wilson fermions is brought about by a phase in which flavour and parity symmetry are broken spontaneously at finite lattice spacing. At finite temperature this phase should retract from the weak coupling limit to ofrm 5 cusps. This scenario is studied with tree level symanzik imporved actions for both gauge and fermion fields on lattices of size 8~3x4 and 12~2x24x4.
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