Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-06-03
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages including 7 embedded postscript figures, use latex with ppeuc.sty (included). see also http://www.edu.physics.uch.gr/
Scientific paper
We review recent work on a new class of topological defects which possess a nonsymmetric core. They arise in scalar field theories with global symmetries, U(1) for domain walls and SU(2) for vortices, which are explicitly broken to $Z_2$ and U(1) respectively. Both of the latter symmetries are spontaneously broken. For a particular range of parameters both types of defect solutions are shown to become unstable and decay to the well known stable walls and vortices with symmetric cores.
Axenides Minos
Perivolaropoulos Leandros
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