CP-VIOLATING SOLITONS IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

We study nontopological and CP-violating static wall solutions in the framework of the minimal supersymmetric standard model. We show that s uch membranes, characterized by a nontrivial winding of the relative U (1) phase of the two Higgs fields in the direction orthogonal to the w all, exist for small values of the mass of the CP-odd Higgs boson when loop corrections to the Higgs potential are included. Although their present-day existence is excluded by experimental bounds, we argue why they may have existed in the early universe with important cosmologic al consequences.