Dr. David Diego, Barcelona, IFAE
Supersymmetry and Electroweak Breaking in the Interval
November 3, 2005

Hypermultiplets are considered in the five-dimensional interval where
all fields are continuous and the boundary conditions are dynamically
obtained from the action principle. The orbifold boundary conditions
are obtained as particular cases. We can interpret the Scherk-Schwarz
supersymmetry breaking as a misalignment of boundary conditions while
a new source of supersymmetry breaking corresponding to a mismatch of
different boundary parameters is identified. The latter can be viewed
as coming from boundary supersymmetry breaking masses for hyperscalars
and the nature of the corresponding supersymmetry breaking parameter
is analyzed. For some regions of the parameter space where
supersymmetry is broken (either by Scherk-Schwarz boundary conditions
or by boundary hyperscalar masses) electroweak symmetry breaking can
be triggered at the tree level.