Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-11-13
Phys.Rev.D81:106005,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, a clarification about boundary conditions added
Scientific paper
10.1103/PhysRevD.81.106005
On an interval compactification in supersymmetric theory, boundary conditions for bulk fields must be treated carefully. If they are taken arbitrarily following the requirement that a theory is supersymmetric, the conditions could give redundant constraints on the theory. We construct a supersymmetric action integral on an interval by introducing brane interactions with which total derivative terms under the supersymmetry transformation become zero due to a cancellation. The variational principle leads equations of motion and also boundary conditions for bulk fields, which determine boundary values of bulk fields. By estimating mass spectrum, {\it spontaneous} supersymmetry breaking in this simple setup can be realized in a new framework. This supersymmetry breaking does not induce massless R-axion, which is favorable for phenomenology. It is worth noting that fermions in hyper-multiplet, gauge bosons, and the fifth-dimensional component of gauge bosons can have zero-modes (while the other components are all massive as Kaluza-Klein modes), which fits the gauge-Higgs unification scenarios.
Haba Naoyuki
Uekusa Nobuhiro
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