Softness of Scherk-Schwarz Supersymmetry Breaking
Hyung Do Kim (KIAS)
TL;DR
This paper examines mass corrections in 5-D models with Scherk-Schwarz supersymmetry breaking, demonstrating that one-loop corrections are UV-insensitive when using a Lorentz-invariant cutoff, highlighting a unique property of boundary-condition-induced breaking.
Contribution
It clarifies the reliability of KK regularization and proves UV insensitivity of mass corrections in Scherk-Schwarz supersymmetry breaking with a sharp cutoff.
Findings
One-loop mass corrections are independent of UV physics.
Scherk-Schwarz breaking's unique boundary condition leads to UV insensitivity.
KK regularization's reliability is analyzed in the context of 5-D Lorentz-invariant cutoff.
Abstract
We investigate how the mass correction appears in 5-D with Scherk-Schwarz compactification and clarify whether the KK regularization is reliable method or not. In the extremely sharp cutoff limit of the 5-D regulator which preserves 5-D Lorentz invariance, we prove that the one loop correction to the mass does not depend on the ultraviolet physics for the Scherk-Schwarz breaking of supersymmetry. This is a unique property of Scherk-Schwarz breaking which is given by the boundary condition.
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