Abstract
Utilizing the idea of extra large dimensions, it has been suggested that the\ngauge and gravity couplings unification can happen at a scale as low as 1 TeV.\nIn this paper, we explore this phenomenological possibility within string\ntheory. In particular, we discuss how the proton decay bound can be satisfied\nin Type I string theory. The string picture also suggests different scenarios\nof gauge and gravitational couplings unification. The various scenarios are\nexplicitly illustrated with a specific 4-dimensional N=1 supersymmetric chiral\nType I string model with Pati-Salam-like gauge symmetry. We point out certain\nfeatures that should be generic in other Type I strings.\n
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Publication Info
- Year
- 1998
- Type
- article
- Volume
- 58
- Issue
- 10
- Citations
- 316
- Access
- Closed
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Identifiers
- DOI
- 10.1103/physrevd.58.106007