TY - BOOK AU - Velo,Giorgio AU - Wightman,Arthur S. ED - SpringerLink (Online service) TI - Invariant Wave Equations: Proceedings of the “Ettore Majorana” International School of Mathematical Physics Held in Erice, June 27 to July 9, 1977 T2 - Lecture Notes in Physics, SN - 9783540359296 AV - QC1-75 U1 - 530 23 PY - 1978/// CY - Berlin, Heidelberg PB - Springer Berlin Heidelberg KW - Physics KW - Physics, general N1 - to the physical applications of invariant wave equations -- The general theory of invariant wave equations -- The external field problem -- Mathematics of invariant wave equations -- Method of characteristics in the external field problem or How to recognize an acausal equation when you see one -- Particles with spin S ? 1 in an external field -- Nonlinear invariant wave equations -- Structure properties of solutions of classical non-linear relativistic field equations -- Relevance of classical solutions to quantum theories -- Yang mills instantons, geometrical aspects -- Quantum theory of non-linear invariant wave (field) equations or: Super selection sectors in constructive quantum field theory -- The S-operator for spin-0 and spin-particles in time-dependent external fields UR - http://dx.doi.org/10.1007/BFb0032327 ER -