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- Title:
- Hadronic interactions from effective chiral Lagrangians of quarks and gluons
- Krein, G.
- Universidade Estadual Paulista (UNESP)
- Effective chiral Lagrangians involving constituent quarks, Goldstone bosons and long-distance gluons are believed to describe the strong interactions in an intermediate energy region between the confinement scale and the chiral symmetry breaking scale. Baryons and mesons in such a description are bound states of constituent quarks. We discuss the combined use of the techniques of effective chiral field theory and of the field theoretic method known as Fock-Tani representation to derive effective hadron interactions. The Fock-Tani method is based on a change of representation by means of a unitary transformation such that the composite hadrons are redescribed by elementary-particle field operators. Application of the unitary transformation on the microscopic quark-quark interaction derived from a chiral effective Lagrangian leads to chiral effective interactions describing all possible processes involving hadrons and their constituents. The formalism is illustrated by deriving the one-pion-exchange potential between two nucleons using the quark-gluon effective chiral Lagrangian of Manohar and Georgi. We also present the results of a study of the saturation properties of nuclear matter using this formalism.
- 1-Jan-1997
- International Workshop on Hadron Physics 96. Singapore: World Scientific Publ Co Pte Ltd, p. 258-265, 1997.
- 258-265
- World Scientific Publ Co Pte Ltd
- http://ams.confex.com/ams/32Rad11Meso/techprogram/paper_96627.htm
- http://hdl.handle.net/11449/23540
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- http://repositorio.unesp.br/handle/11449/23540
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