Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-03-14
Physics
High Energy Physics
High Energy Physics - Theory
4 pages, latex. v2: Improved discussion on impossibility on some Yukawa couplings and references added. v3:reference added
Scientific paper
This paper studies the compatibility of having a grand unification scheme for
particle physics, while at the same time having a perturbative string theory
description of such a scheme on a D-brane. This is studied in a model
independent approach and finds a negative result. Some additional observations
related to model building on branes are made.
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