Pauli writes on a correspondence with Heisenberg on his ideas on field quantization.
Zonder titelPauli replies to Källén's letter of the 10 and the 12 January 1957. He talks about of his discussion with Fierz of the time-dependent solutions for dipole ghosts. Fierz criticizes Pauli's continuity argument for the S-matrix.
Zonder titelPauli writes of his reactions to the experiments showing parity violation. He gives reasons for his doubt of this possibility up to now. The main problem is now: why are the strong interactions reflexion-invariant? Pauli makes some general considerations on TCP-invariance.
Zonder titelPauli makes a critical comment on Fierz's paper on Jordan's theory.
Zonder titelPauli talks more about the indefinite metric which Pauli rejects.
Zonder titelHeisenberg talks about objections to Pauli's argument as regards the proof of the unitary character of the S-matrix.
Zonder titelHeisenberg talks about a reviewed discussion of the mathematical results for the three sectors V, N+2$\Theta$, N+V.
Zonder titelWeisskopf replies to Pauli's letter of the 27th January 1957. He writes about the two components in Dirac's equation and its possible consequences.
Zonder titelFierz asks some questions connected with the two-component theory of Lee and Yang.
Zonder titelAddendum to appendix of last letter, giving Pauli' conclusion. The discussion with Heisenberg has not brought him nearer to a possibility of interpreting physically the formulae derived from the indefinite metric.
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