Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-11-22
Nucl.Phys.B552:209-245,1999
Physics
High Energy Physics
High Energy Physics - Theory
55 pages; plain TeX; source split into 50 files including all macros and 1 eps figure
Scientific paper
10.1016/S0550-3213(99)00203-5
We study BPS saturated domain walls in the supersymmetric SU(2) gauge theory. For a theory with a very light adjoint scalar (mass <~ Lambda/400) we use the perturbed N=2 Seiberg-Witten theory to calculate the actual field configuration of the domain wall. The wall has a sandwich-like five-layer structure of three distinct phases -- electric confinement, Coulomb and oblique confinement -- separated by two separate transition regions. For larger scalar masses, the three-phase structure disappears and the Seiberg-Witten theory becomes inadequate because of two major problems: First, the higher-derivative interactions between the light fields become relevant and second, both the magnetic monopole condensate and the dyon condensate show up in the same region of space, a phenomenon indescribable in terms of a local field theory. Nevertheless, we argue that the BPS saturated domain wall continues to exist in this regime and give a qualitative description of the scalar and gaugino condensates. Finally, we discuss the domain walls in MQCD and translate the BPS conditions into coupled non-linear differential equations.
Kaplunovsky Vadim S.
Sonnenschein Jacob
Yankielowicz Shimon
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