Concepts in Hadron Physics 87 3Die melingpot-Metaphorik11

3Die melingpot-Metaphorik11

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Concepts in Hadron Physics 87 3Die melingpot-Metaphorik11Soluble quantum field theory models are a rare commodity. An infinite number of degrees of freedom and noncompact invariance groups have a nasty habit of ex ploding in the model makers' face. Nevertheless, impor tant progress has recently been made in the class of superrenormalizable relativistic theories, such as a self interacting boson in a two dimensional space time [ 1]. These results have been obtained starting with the free field and adding the