期刊
EUROPEAN PHYSICAL JOURNAL A
卷 50, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1140/epja/i2014-14085-x
关键词
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资金
- BMBF [06GI7121]
- Helmholtz International Center for FAIR within the LOEWE program of the State of Hesse
- Helmholtzzentrum GSI
In this work we devise a new method to study quark-anti-quark interactions beyond simple ladder-exchange that yield massless pions in the chiral limit. The method is based on the requirement to have a representation of the quark-gluon vertex that is explicitly given in terms of quark dressings functions. We outline a general procedure to generate the Bethe-Salpeter kernel for a given vertex representation. Our method allows not only the identification of the mesons' masses but also the extraction of their Bethe-Salpeter wave functions exposing their internal structure. We exemplify our method with vertex models that are of phenomenological interest.
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