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arxiv: hep-th/0603155 · v1 · submitted 2006-03-20 · ✦ hep-th

Quantum Field Theory: Where We Are

classification ✦ hep-th
keywords quantumtheoryapproachescommentconceptsconcerningelementaryfield
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We comment on the present status, the concepts and their limitations, and the successes and open problems of the various approaches to a relativistic quantum theory of elementary particles, with a hindsight to questions concerning quantum gravity and string theory.

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