Mesons and baryons in a soft-wall holographic approach
  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. 
Thomas Gutsche, Valery E. Lyubovitskij, Ivan Schmidt, Alfredo Vega
hep-ph