Parameter Space Investigations of Free Fermionic Heterotic Models

Details Parameter Space Investigations of Free Fermionic Heterotic Models Parameter Space Investigations of Free Fermionic Heterotic Models

2002-10-06

arxiv.org/abs/hep-ph/0210093v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages. Standard Latex

Scientific paper

I survey the parameter space of NAHE-based free fermionic heterotic string models. First, I discuss flat directions of the low energy effective field theories and show that D-flat directions need not be isomorphic to gauge invariant superpotential terms. Next, I review recent studies of three generation SU(3)_C x SU(2)_L x U(1)_Y, SU(3)_C x SU(2)_L x SU(2)_R x U(1)_B-L, SU(4)_C x SU(2)_L x U(1)_Y', and flipped SU(5) models, constructed by Wilson breaking of the underlying SO(10) observable sector gauge group of the NAHE Z_2 x Z_2 basis. Based on talk presented at the First International Conference on String Phenomenology.

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