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TeV Scale Superstring and Extra Dimensions

By Gary Shiu and S. -H. Henry Tye

Abstract

Utilizing the idea of extra large dimensions, it has been suggested that the gauge and gravity couplings unification can happen at a scale as low as 1 TeV. In this paper, we explore this phenomenological possibility within string theory. In particular, we discuss how the proton decay bound can be satisfied in Type I string theory. The string picture also suggests different scenarios of gauge and gravitational couplings unification. The various scenarios are explicitly illustrated with a specific 4-dimensional N=1 supersymmetric chiral Type I string model with Pati-Salam-like gauge symmetry. We point out certain features that should be generic in other Type I strings.Comment: Revtex 3.0, 24 pages, Introduction revised to correct citations, typos corrected, minor change

Topics: High Energy Physics - Theory, High Energy Physics - Phenomenology
Publisher: 'American Physical Society (APS)'
Year: 1998
DOI identifier: 10.1103/PhysRevD.58.106007
OAI identifier: oai:arXiv.org:hep-th/9805157

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