We study total and partial supersymmetry breakingQ0y freely acting orbifolds, or equivalently by Scherk-Schwarz compactifications, in type I strifig theory. In particular, we describe a fourdimensional chirat compactification with spontaneously broken N = 1 supersymmetry, some models with partial N = 4 ---+ N = 2 and N = 4 ---+ N = 1 supersymmetry breaking and their heterotic and M-theory duals. A generic feature of these models is that in the gravitational sector and in the spectrum of D-branes parallel to the breaking coordinate, all mass splittings are proportional to the compactification scale, while global (extended) supersymmetry remains unbroken at tree level for the massless excitations of D-branes transverse to the breaking direction.

Partial Breaking of Supersymmetry, Open Strings and M Theory (TOPCITE: 103 citazioni su SPIRES HEP)

SAGNOTTI, AUGUSTO
1999

Abstract

We study total and partial supersymmetry breakingQ0y freely acting orbifolds, or equivalently by Scherk-Schwarz compactifications, in type I strifig theory. In particular, we describe a fourdimensional chirat compactification with spontaneously broken N = 1 supersymmetry, some models with partial N = 4 ---+ N = 2 and N = 4 ---+ N = 1 supersymmetry breaking and their heterotic and M-theory duals. A generic feature of these models is that in the gravitational sector and in the spectrum of D-branes parallel to the breaking coordinate, all mass splittings are proportional to the compactification scale, while global (extended) supersymmetry remains unbroken at tree level for the massless excitations of D-branes transverse to the breaking direction.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/7415
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