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NON-ABELIAN FLAT DIRECTIONS IN A MINIMAL SUPERSTRING STANDARD MODEL

Center for Theoretical Physics, Department of Physics, Texas A&M University, College Station, TX 77843, USA

Astro Particle Physics Group, Houston Advanced Research Center (HARC), The Mitchell Campus, Woodlands, TX 77381, USA

Center for Theoretical Physics, Department of Physics, Texas A&M University, College Station, TX 77843, USA

Astro Particle Physics Group, Houston Advanced Research Center (HARC), The Mitchell Campus, Woodlands, TX 77381, USA

Academy of Athens, Chair of Theoretical Physics, Division of Natural Sciences, 28 Panepistimiou Avenue, Athens 10679, Greece

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J. W. WALKER

Center for Theoretical Physics, Department of Physics, Texas A&M University, College Station, TX 77843, USA

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A. E. FARAGGI

Department of Physics, University of Minnesota, Minneapolis, MN 55455, USA

Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, UK

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https://doi.org/10.1142/S0217732300001444Cited by:33 (Source: Crossref)

Abstract

Recently, by studying exact flat directions of non-Abelian singlet fields, we demonstrated the existence of free fermionic heterotic-string models in which the SU(3)_C×SU(2)_L×U(1)_Y-charged matter spectrum reduces to that of the MSSM in the effective field theory. In this letter we generalize the analysis to include vevs of non-Abelian fields. We find MSSM-producing, exact non-Abelian flat directions, which are the first such examples in the literature. We examine the possibility that hidden sector condensates lift the flat directions.