Quark mass in the Sakai-Sugimoto model of chiral symmetry breaking


Evans, Nick and Threlfall, Ed (2007) Quark mass in the Sakai-Sugimoto model of chiral symmetry breaking Pre-print, pp. 1-14.

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Description/Abstract

We re-analyze D8 brane embeddings in the geometry of a D4 brane wrapped on a circle that describe chiral symmetry breaking in a strongly coupled non-supersymmetric gauge theory. We argue that if the holographic fields are correctly interpreted, the original embeddings describe a complex quark mass and condensate in the theory. We show that in this interpretation when a quark mass is present there is a massive pseudo Goldstone boson (pion). A previously identified massless fluctuation is, we argue, not a physical state in the field theory. We also determine the behaviour of the quark condensate as a function of the quark mass.

Item Type: Article
Additional Information: arXiv:0706.3285v2
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ePrint ID: 57207
Date :
Date Event
22 June 2007Published
Date Deposited: 13 Aug 2008
Last Modified: 16 Apr 2017 17:39
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/57207

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