Gluino condensation in strongly coupled heterotic string theory
- Joseph Henry Laboratories, Princeton University, Jadwin Hall, Princeton, New Jersey 08544 (United States)
Strongly coupled heterotic E{sub 8}{times}E{sub 8} string theory, compactified to four dimensions on a large Calabi-Yau manifold {bold X}, may represent a viable candidate for the description of low-energy particle phenomenology. In this regime, heterotic string theory is adequately described by low-energy {ital M} theory on {bold R}{sup 4}{times}{bold S}{sup 1}/{bold Z}{sub 2}{times}{bold X}, with the two E{sub 8}{close_quote}s supported at the two boundaries of the world. In this paper we study the effects of gluino condensation as a mechanism for supersymmetry breaking in this {ital M}-theory regime. We show that when a gluino condensate forms in {ital M} theory, the conditions for unbroken supersymmetry can still be satisfied locally in the orbifold dimension {bold S}{sup 1}/{bold Z}{sub 2}. Supersymmetry is then only broken by the global topology of the orbifold dimension, in a mechanism similar to the Casimir effect. This mechanism leads to a natural hierarchy of scales, and elucidates some aspects of heterotic string theory that might be relevant to the stabilization of moduli and the smallness of the cosmological constant. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 399913
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 12 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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