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D7 brane embeddings and chiral symmetry breaking

D7 brane embeddings and chiral symmetry breaking
D7 brane embeddings and chiral symmetry breaking
We study the embedding of D7 brane probes in five geometries that are deformations of AdS5 × S5. Each case corresponds to the inclusion of quark fields in a dual gauge theory where we are interested in investigating whether chiral symmetry breaking occurs. We use a supersymmetric geometry describing an = 2 theory on its moduli space and a dilaton driven non-supersymmetric flow to establish criteria for a chiral symmetry breaking embedding. We develop a simple spherical D7 embedding that tests the repulsion of the core of the geometry and signals dynamical symmetry breaking. We then use this tool in more complicated geometries to show that an = 2* theory and a non-supersymmetric theory with scalar masses do not induce a chiral condensate. Finally we provide evidence that the Yang Mills* geometry does.
D-branes, AdS-CFT, dS-CFT correspondence
5-31
Evans, N.
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Shock, J.P.
463ac41b-072a-4620-91b0-4977c85445e2
Waterson, T.
2cd0e9af-099b-4001-bf1e-3313954d59ca
Evans, N.
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Shock, J.P.
463ac41b-072a-4620-91b0-4977c85445e2
Waterson, T.
2cd0e9af-099b-4001-bf1e-3313954d59ca

Evans, N., Shock, J.P. and Waterson, T. (2005) D7 brane embeddings and chiral symmetry breaking. Journal of High Energy Physics, 3, 5-31. (doi:10.1088/1126-6708/2005/03/005).

Record type: Article

Abstract

We study the embedding of D7 brane probes in five geometries that are deformations of AdS5 × S5. Each case corresponds to the inclusion of quark fields in a dual gauge theory where we are interested in investigating whether chiral symmetry breaking occurs. We use a supersymmetric geometry describing an = 2 theory on its moduli space and a dilaton driven non-supersymmetric flow to establish criteria for a chiral symmetry breaking embedding. We develop a simple spherical D7 embedding that tests the repulsion of the core of the geometry and signals dynamical symmetry breaking. We then use this tool in more complicated geometries to show that an = 2* theory and a non-supersymmetric theory with scalar masses do not induce a chiral condensate. Finally we provide evidence that the Yang Mills* geometry does.

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More information

Published date: 2005
Keywords: D-branes, AdS-CFT, dS-CFT correspondence

Identifiers

Local EPrints ID: 57202
URI: https://eprints.soton.ac.uk/id/eprint/57202
PURE UUID: a3324d25-a696-4646-b9f3-46d3edaac788

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Date deposited: 14 Aug 2008
Last modified: 14 Aug 2019 17:45

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