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, 1-14. (arXiv:0706.3285v2).
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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 |
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| Related URLs: | |
| Subjects: | Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy |
| Item ID: | 57207 |
| Date Deposited: | 13 Aug 2008 |
| Last Modified: | 02 Mar 2012 11:50 |
| Contributors: | Evans, Nick (Author) Threlfall, Ed (Author) |
| Date: | 22 June 2007 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/57207 |
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