The Construction of Physical States in Quantum Field Theory

  • L. Streit
Conference paper
Part of the Acta Physica Austriaca book series (FEWBODY, volume 7/1970)


There were the years when quantum field theorists and the dynamical problem sat there and looked at each other in despair. Nonlinear theories would either give colorful nonsense answers (infrared, ultraviolet catastrophes) or else they would be butchered beyond resemblance to anything that the purists would call field theory. In those days it used to be a party game to guess at what the miracle cure might be,the “totally new idea” that was needed to lead out of this mess. Now, after a thousand days of rapid progress and of most fascinating results, it has become transparent that such “gifts from heaven” were not required. The ingredients of the success story were to a large extent “more of the same”: space and ultraviolet cutoffs, theories “in a box”, path integrals, perturbation expansions etc., etc.


Canonical Commutation Relation Selfadjoint Extension Relativistic Quantum Field Theory Canonical Commutation Relation Quadratic Perturbation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1970

Authors and Affiliations

  • L. Streit
    • 1
  1. 1.Bell Telephone Laboratories, Inc.Murray HillUSA

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