Dilaton in a soft-wall holographic approach to mesons and baryons

Thomas Gutsche, Valery E. Lyubovitskij, Ivan Schmidt, Alfredo Vega

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Abstract

We discuss a holographic soft-wall model developed for the description of mesons and baryons with adjustable quantum numbers n, J, L, S. This approach is based on an action which describes hadrons with broken conformal invariance and which incorporates confinement through the presence of a background dilaton field. We show that in the case of the bound-state problem (hadronic mass spectrum) two versions of the model with a positive and negative dilaton profile are equivalent to each other by a special transformation of the bulk field. We also comment on recent works which discuss the dilaton sign in the context of soft-wall approaches.

Original languageEnglish
Article number076003
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number7
DOIs
Publication statusPublished - 4 Apr 2012
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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