Some analytical aspects in field theories with dynamical mass generation |
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Authors: | Vladimir Sauli |
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Affiliation: | (1) Department of Theoretical Physics, Nuclear Physics Institute, Acad. Sci. CR, 250 68 Rez near Prague, Czech Republic |
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Abstract: | The consequence of dynamical mass generation on the singularity structure of propagators is discussed. First the phenomena of dynamical mass generation is discussed in the framework of Euclidean gap equations, then a possible Minkowski solution is looked for. The examples are reviewed and studied for several models: Yukawa, QED, QCD and Wess-Zumino. It is argued that the absence of propagator pole goes hand in hand with the nontrivial solution for mass function. The consequences are discussed. |
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Keywords: | Schwinger-Dyson equation mass generation spectral representation |
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