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Particles and Fields
Eur. Phys. J. C 28, 545-555 (2003)
DOI: 10.1140/epjc/s2003-01211-8

Deconstruction of gauge symmetry breaking by discrete symmetry and GN unification

Tianjun Li and Tao Liu

Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104-6396, USA


(Received: 10 October 2002 / Revised version: 23 March 2003 / Published online: 13 May 2003)

Abstract
We deconstruct the non-supersymmetric SU(5) breaking by discrete symmetry on the space-time $M^4\times S^1$ and $M^4\times S^1/(Z_2\times Z_2')$ in the Higgs mechanism deconstruction scenario. Also we explain the subtle point of how to exactly match the continuum results with the latticized results on the quotient space S1/Z2 and $S^1/(Z_2\times Z_2')$. We also propose an effective deconstruction scenario and discuss the gauge symmetry breaking by the discrete symmetry on the theory space in this approach. As an application, we suggest the GN unification where GN is broken down to $SU(3)\times SU(2)\times U(1)^{n-3}$ by the bifundamental link fields and the doublet-triplet splitting can be achieved.



© Società Italiana di Fisica, Springer-Verlag 2003