Effective action and soft supersymmetry breaking for intersecting D-brane models

Title:
Effective action and soft supersymmetry breaking for intersecting D-brane models
Creator:
Körs, Boris (Author)
Nath, Pran (Author)
Language:
English
Publisher:
January 01, 2004
Type of resource:
Text
Genre:
Articles
Format:
electronic
Digital origin:
born digital
Abstract/Description:
We consider a generic scenario of spontaneous breaking of supersymmetry in the hidden sector within N=1 supersymmetric orientifold compactifications of type II string theories with D-branes that support semi-realistic chiral gauge theories. The soft breaking terms in the visible sector of the models are computed in a standard way without specifying the breaking mechanism, which leads to expressions that generalize those formerly known for heterotic or type I string models. The elements of the effective tree level supergravity action relevant for this, such as the Kahler metric for the matter fields, the superpotential of the visible sector and the gauge kinetic functions, are specified by dimensional reduction and duality arguments. As phenomenological applications we argue that gauge coupling unification can only occur in special regions of the moduli space; we show that flavor changing neutral currents can be suppressed sufficiently for a wide range of parameters, and we briefly address the issues of CP violation, electric dipole moments and dark matter, as well.
Comments:
Originally posted at http://arxiv.org/abs/hep-th/0309167v4. Preprint of an article published in Nuclear Physics B, v.681 no.1-2, 2004.
Subjects and keywords:
Supersymmetry
Broken symmetry (Physics)
D-branes
String models
high energy physics theory
orientifold compactifications
chiral gauge theories
Physics
Permanent Link:
http://hdl.handle.net/2047/d20000761

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