Pauli writes on the difficulties of field quantization in the light of Lee's and Heisenberg's latest model. A new idea of how "ghosts" could be excluded from the theories the real value of e$^{2}$/(h.c) should give rise to a "Kombnationsverbot" between "ghosts" and "non-ghosts".
Pauli, WolfgangPauli makes some remarks on Heisenberg's "Hilbert-space II", and replies to Heisenberg's criticism of Landeau's work.
Pauli, WolfgangPauli comments on Heisenberg's formulation of field quantization and some questions on specified points.
Pauli, WolfgangPauli replies to Heisenberg's letter of 1st January. He is not convinced that dipole-"ghosts" cannot appear in Lee's model and gives some reasons for this.
Pauli, WolfgangPauli regards Heisenberg's letter of 31 January as showing new progress. He talks about the mathematical difficulties of the Lee model and a general charaterization of the class of models with indefinite metric.
Pauli, WolfgangMathematical appendix to the last letter.
Pauli, WolfgangPauli writes about the results of his discussion (with Källén) of the motion of V- and N-particles in the Lee model, and is now more optimistic about Heisenberg's interpretation. He has questions which still have to be clarified.
Pauli, WolfgangPauli makes a few more remarks on Heisenberg's manuscript.
Pauli, WolfgangPauli replies to Heisenberg's letter of 17 June, on pedagogical questions and on questions of principle.
Pauli, WolfgangPauli talks about some remarks by Källén on Heisenberg's manuscript.
Pauli, Wolfgang