Quantum field theory and string theory

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SUMMARY

The relationship between quantum field theory (QFT) and string theory is foundational, with string theory serving as a framework from which QFT can be derived. Specifically, if string theory is validated, QFT will emerge as a limit where quantum theory is applicable. The discussion highlights that scattering amplitudes of gluons and gravitons can be deduced from string theory, establishing a direct connection between the two theories.

PREREQUISITES
  • Understanding of quantum field theory (QFT)
  • Familiarity with string theory concepts
  • Knowledge of scattering amplitudes in particle physics
  • Basic principles of quantum mechanics
NEXT STEPS
  • Research the derivation of scattering amplitudes from string theory
  • Explore the implications of string theory on quantum field theory
  • Study specific examples of QFT that may not generalize to string theory
  • Investigate the latest developments in string theory validation
USEFUL FOR

Physicists, theoretical researchers, and students interested in the advanced concepts of quantum mechanics and the interplay between quantum field theory and string theory.

richerrich
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What is the relationship between quantum field theory and string theory?
 
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If string theory is proven correct, then quantum field theory should be deduced from it where quantum theory holds.
 
quantum field theory is always a limit of string theory*. for example, you can deduce things like scattering amplitudes of gluons and gravitons from string theory.

*probably too strong of a statement, it might be possible for some qft's to not be generalizable to string theory (in a non trivial way at least)
 

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