Quantum electrodynamics at large distances. I. Extracting the correspondence-principle part.

  • Kawai, Stapp
  • Published 1995 in Physical review. D, Particles and fields
The correspondence principle is important in quantum theory on both the fundamental and practical levels: it is needed to connect theory to experiment , and for calculations in the technologically important domain lying between the atomic and classical regimes. Moreover, a correspondence-principle part of the S-matrix is normally separated out in quantum… CONTINUE READING