Spontaneous Z{sub 2} symmetry breaking in the orbifold daughter of N=1 superYangMills theory, fractional domain walls and vacuum structure
Abstract
We discuss the fate of the Z{sub 2} symmetry and the vacuum structure in a SU(N)xSU(N) gauge theory with one bifundamental Dirac fermion. This theory can be obtained from SU(2N) supersymmetric YangMills theory by virtue of Z{sub 2} orbifolding. We analyze dynamics of domain walls and argue that the Z{sub 2} symmetry is spontaneously broken. Since unbroken Z{sub 2} is a necessary condition for nonperturbative planar equivalence we conclude that the orbifold daughter is nonperturbatively nonequivalent to its supersymmetric parent. En route, our investigation reveals the existence of fractional domain walls, similar to fractional Dbranes of string theory on orbifolds. We conjecture on the fate of these domain walls in the true solution of the Z{sub 2}broken orbifold theory. We also comment on relation with nonsupersymmetric string theories and closedstring tachyon condensation.
 Authors:
 Department of Physics, University of Wales Swansea, Singleton Park, Swansea, SA2 8PP (United Kingdom)
 William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
 (Russian Federation)
 Publication Date:
 OSTI Identifier:
 20711580
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevD.72.105001; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; GAUGE INVARIANCE; MATHEMATICAL SOLUTIONS; MEMBRANES; QUANTUM FIELD THEORY; STRING MODELS; SU GROUPS; SUPERSYMMETRY; SYMMETRY BREAKING; VACUUM STATES; YANGMILLS THEORY
Citation Formats
Armoni, A., Gorsky, A., Institute of Theoretical and Experimental Physics, Moscow 117259, and Shifman, M.. Spontaneous Z{sub 2} symmetry breaking in the orbifold daughter of N=1 superYangMills theory, fractional domain walls and vacuum structure. United States: N. p., 2005.
Web. doi:10.1103/PhysRevD.72.105001.
Armoni, A., Gorsky, A., Institute of Theoretical and Experimental Physics, Moscow 117259, & Shifman, M.. Spontaneous Z{sub 2} symmetry breaking in the orbifold daughter of N=1 superYangMills theory, fractional domain walls and vacuum structure. United States. doi:10.1103/PhysRevD.72.105001.
Armoni, A., Gorsky, A., Institute of Theoretical and Experimental Physics, Moscow 117259, and Shifman, M.. Tue .
"Spontaneous Z{sub 2} symmetry breaking in the orbifold daughter of N=1 superYangMills theory, fractional domain walls and vacuum structure". United States.
doi:10.1103/PhysRevD.72.105001.
@article{osti_20711580,
title = {Spontaneous Z{sub 2} symmetry breaking in the orbifold daughter of N=1 superYangMills theory, fractional domain walls and vacuum structure},
author = {Armoni, A. and Gorsky, A. and Institute of Theoretical and Experimental Physics, Moscow 117259 and Shifman, M.},
abstractNote = {We discuss the fate of the Z{sub 2} symmetry and the vacuum structure in a SU(N)xSU(N) gauge theory with one bifundamental Dirac fermion. This theory can be obtained from SU(2N) supersymmetric YangMills theory by virtue of Z{sub 2} orbifolding. We analyze dynamics of domain walls and argue that the Z{sub 2} symmetry is spontaneously broken. Since unbroken Z{sub 2} is a necessary condition for nonperturbative planar equivalence we conclude that the orbifold daughter is nonperturbatively nonequivalent to its supersymmetric parent. En route, our investigation reveals the existence of fractional domain walls, similar to fractional Dbranes of string theory on orbifolds. We conjecture on the fate of these domain walls in the true solution of the Z{sub 2}broken orbifold theory. We also comment on relation with nonsupersymmetric string theories and closedstring tachyon condensation.},
doi = {10.1103/PhysRevD.72.105001},
journal = {Physical Review. D, Particles Fields},
number = 10,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}

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