Explored in this report is the essential interconnectedness of Grand Unified
and String Theoretic Phenomenology. In order to extract a modeled connection to
low-energy physics from the context of superstring theory, it is presently necessary to
input some preferred region of parameter space in which to search. This need may be
well filled by a parallel study of Grand Unification, which is by contrast in immediate
proximity to a wealth of experimental data. The favored GUT so isolated may then
reasonably transfer this phenomenological correlation to a string embedding, receiving
back by way of trade a greater sense of primary motivation, and potentially enhanced
predictability for parameters taken as input in a particle physics context.
The Flipped SU(5) GUT will be our preferred framework in which to operate and
first receives an extended study in a non-string derived setting. Of particularly timely
interest are predictions for super-particle mass ranges and the interrelated question of
proton decay lifetime. Corrections to such a picture under the lift to a string embedding
are also considered. Two principal approaches to string model building are next
treated in turn: the Heterotic Free Fermionic construction and Intersecting D-branes
in Orientifold compactifications. In both contexts, a summary of existing constructions,
extensions to known procedures, and original phenomenological contributions
are described.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/2622 |
| Date | 01 November 2005 |
| Creators | Walker, Joel Wesley |
| Contributors | Nanopoulos, Dimitri V. |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | 997565 bytes, electronic, application/pdf, born digital |
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