An AdS/QCD model from Sen's tachyon action

Details An AdS/QCD model from Sen's tachyon action An AdS/QCD model from Sen's tachyon action

2010-03-11

arxiv.org/abs/1003.2377v2

Phys.Rev.D81:115004,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, references added, discussions improved

Scientific paper

10.1103/PhysRevD.81.115004

We construct a new, simple phenomenological model along the lines of AdS/QCD. The essential new ingredient is the brane-antibrane effective action including the open string tachyon proposed by Sen. Chiral symmetry breaking happens because of tachyon dynamics. We fit a large number of low-spin meson masses at the 10%-15% level. The only free parameters involved in the fits correspond to the overall QCD-scale and the quark masses. Several aspects of previous models are qualitatively improved.

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