On spontaneous breaking of conformal symmetry by probe flavour D-branes

A bstract We explore the possibilities of breaking conformal symmetry spontaneously by introducing flavour branes into conformal holographic backgrounds in the probe limit. A prototype model of such a mechanism is based on placing configuration in the Klebanov-Witten conifold based model. In this pa...

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Bibliographic Details
Published in:The journal of high energy physics 2014-03, Vol.2014 (3), p.1-22, Article 45
Main Authors: Ben-Ami, Omer, Kuperstein, Stanislav, Sonnenschein, Jacob
Format: Article
Language:English
Subjects:
Bosons
Branes
Breaking
Classical and Quantum Gravitation
Dilatons
Elementary Particles
Flavours
High energy physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Spontaneous
String Theory
Symmetry
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Summary:A bstract We explore the possibilities of breaking conformal symmetry spontaneously by introducing flavour branes into conformal holographic backgrounds in the probe limit. A prototype model of such a mechanism is based on placing configuration in the Klebanov-Witten conifold based model. In this paper we generalize this model. We conjecture on the required topology of the backgrounds and the corresponding probe brane embeddings. We identify several models that obey these requirements and admit spontaneous breaking of conformal invariance. These include type IIB conifold based examples, dual to defect field theories based on the conifold, and type IIA constructions based on the ABJM model. We identify the dilaton, the corresponding Goldstone boson, discuss its effective action and address the “ a -term”. We briefly discuss the relevance of these models to the pseudo dilaton.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2014)045