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There is a nice derivation of Newton’s law from quantum field theory in Zee‘s book „Quantum Field theory in a nutshell“. You can also arrive at Einstein’s field

There is a nice derivation of Newton’s law from quantum field theory in Zee‘s book „Quantum Field theory in a nutshell“. You can also arrive at Einstein’s field equations by deriving the beta function of bosonic string theory and (2-2 scattering to be precise) and requiring that it is constant.

tus88 7y ago
Interesting, is there any reading material on the second point?
- orbifold 7y ago
  David Tong‘s lecture notes are pretty good: What I am talking about is covered in lecture 7: http://www.damtp.cam.ac.uk/user/tong/string/seven.pdf http://www.damtp.cam.ac.uk/user/tong/string/seven.pdf