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Open and Unoriented Strings from Topological Membrane - I. Prolegomena
We study open and unoriented strings in a Topological Membrane (TM) theory
through orbifolds of the bulk 3D space. This is achieved by gauging discrete
symmetries of the theory. Open and unoriented strings can be obtained from all
possible realizations of , and symmetries. The important role of
symmetry to distinguish between Dirichlet and Neumman boundary conditions is
discussed in detail.Comment: 2+43 pages, 25 figures. Major changes, mostly in subsection 4.5 and
References adde
One-loop stau masses in the effective potential approach
We calculate the one-loop contributions to the tau slepton masses in the
Minimal Supersymmetric Standard Model in the effective potential approach. For
the majority of parameter space under study, those corrections are shown to
elevate the value of the lightest stau mass.Comment: 11 pages, 3 figure
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