Quantum Field Theory: Where We Are
Klaus Fredenhagen, Karl-Henning Rehren, Erhard Seiler
TL;DR
This paper reviews the current state, key concepts, limitations, successes, and open problems in relativistic quantum theories of elementary particles, with insights into quantum gravity and string theory.
Contribution
It provides a comprehensive overview of the developments and challenges in quantum field theory and related approaches, highlighting areas for future research.
Findings
Summary of current status and concepts in quantum field theory
Identification of limitations and open problems
Discussion on quantum gravity and string theory challenges
Abstract
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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