  We identify the global symmetries of SU(2) lattice gauge theory with N
flavors of staggered fermion in the presence of a quark chemical potential mu,
for fermions in both fundamental and adjoint representations, and anticipate
likely patterns of symmetry breaking at both low and high densities. Results
from numerical simulations of the model with N=1 adjoint flavor on a 4^3x8
lattice are presented, using both hybrid Monte Carlo and Two-Step Multi-Boson
algorithms. It is shown that the sign of the fermion determinant starts to
fluctuate once the model enters a phase with non-zero baryon charge density.
HMC simulations are not ergodic in this regime, but TSMB simulations retain
ergodicity even in the dense phase, and in addition appear to show superior
decorrelation. The HMC results for the equation of state and the pion mass show
good quantitative agreement with the predictions of chiral perturbation theory,
which should hold only for N>=2. The TSMB results incorporating the sign of the
determinant support a delayed onset transition, consistent with the pattern of
symmetry breaking expected for N=1.
