@inproceedings{8633e5c7c9ca4ead9d3f5fa85ec1231b,

title = "QCD string and chiral symmetry",

abstract = "We assume that QCD can be described in a certain kinematical regime by an effective string theory. This hadronic string must couple to background chiral fields in a chirally invariant manner, taking into account the true chirally non-invariant QCD vacuum. By requiring conformal symmetry of the string and the unitarity constraint on chiral fields we reconstruct the equations of motion for the latter ones. These provide a consistent background for the propagation of the string. By further requiring locality of the effective action we recover the Lagrangian of non-linear sigma model of pion interactions. The prediction is totally unambiguous and parameter-free. The estimated chiral structural constants of Gasser and Leutwyler fit very well the phenomenological values.",

author = "Andrianov, {A. A.} and D. Espriu",

year = "2003",

month = apr,

day = "1",

doi = "10.1063/1.1570556",

language = "English",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics",

pages = "17--24",

editor = "Ruivo, {M. C.} and Blin, {A. H.} and B. Hiller and {van Beveren}, E. and Osipov, {A. A.}",

booktitle = "Hadron Physics",

address = "United States",

note = "2nd International Workshop on Hadron Physics: Effective Theories of Low Energy QCD ; Conference date: 25-09-2002 Through 29-09-2002",

}