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BPS and non-BPS Domain Walls in Supersymmetric QCD with SU(3) Gauge Group
We study the spectrum of the domain walls interpolating between different
chirally asymmetric vacua in supersymmetric QCD with the SU(3) gauge group and
including 2 pairs of chiral matter multiplets in fundamental and
anti-fundamental representations. For small enough masses m < m* = .286... (in
the units of \Lambda), there are two different domain wall solutions which are
BPS-saturated and two types of ``wallsome sphalerons''. At m = m*, two BPS
branches join together and, in the interval m* < m < m** = 3.704..., BPS
equations have no solutions but there are solutions to the equations of motion
describing a non-BPS domain wall and a sphaleron. For m > m**, there are no
solutions whatsoever.Comment: 10 pages LaTeX, 5 postscript figure
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