STABILITY OF THE BULK PHASE-DIAGRAM OF THE SU(2) LATTICE GAUGE-THEORYWITH FUNDAMENTAL-ADJOINT ACTION

Using improved mean field and strong coupling expansions we re-analyse the bulk phase diagram of the fundamental-adjoint action of the SU(2) Lattice Gauge Theory. We find that the qualitative features of the bu lk phase diagram are robust and unchanged by the inclusion of higher o rder terms. On the other hand, some of the quantitative features, such as the location of the endpoint of the line of bulk phase transitions , seem to be strongly dependent on the higher order terms of the stron g coupling expansion.