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B How does string theory fit with QFT?

  1. May 23, 2017 #1
    In string theory, particles is vibrating strings. However, QFT treats particles as excitations in a quantum field. Can both of these theories be correct? If so, how does them fit together?
  2. jcsd
  3. May 23, 2017 #2


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    In perturbative string theory, QFT can be viewed as an approximation of string theory. In non-perturbative string theory, there are conjectures claiming that string theory and QFT can be equivalent.
  4. May 30, 2017 #3
    Well if QFT explains quantum particles as vibrations in a field then using string theory, you can apply each vibration's frequency according to the molecules being strings?
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