Breitenlohner P., Maison D. (ed.). Quantum Field Theory

Springer-Verlag Berlin Heidelberg 2000 , 323 p.
On the occasion of Wolfhart Zimmermann's 70th birthday a conference on
Quantum Field Theory was held on June 21-24, 1998 at the Ringberg Castle situated
in the splendid scenery of Upper Bavaria.
Twelve invited speakers gave talks on topics related in one or the other way
to the scientific work of Wolfhart Zimmermann. All participants agreed that the
conference was a great success and we would like to thank the speakers for their
interesting and well-prepared talks covering a wide range of interesting actual
quantum field theoretical problems.
With great regret we had received the short-term cancellation of Harry
Lehmann's participation due to his worsening health conditions. Harry Lehmann,
like Wolfhart Zimmermann, one of the pioneers of modern QFT had planned to
give a historical talk on the "Gottinger Feldverein", which we are sure would
have been spiced with many personal anecdotes. Harry Lehmann died a few
months later on Nov. 22, 1998.
In addition to the talks held at the conference we decided to include in
these proceedings a small selection of Wolfhart Zimmermann's scientific papers,
which proved fundamental to various important developments of modern QFT
as there are the treatment of bound states in QFT, Renormalized Perturbation
Theory, Composite Operators and Operator Product Expansions. We resisted
the temptation to include the famous LSZ papers from the fifties, whose content
has already entered in most of the standard text books on QFT.
We would like to thank the Max Planck Society for funding the conference
and A. Hermann and his crew at the Ringberg Castle for their warm hospitality
and perfect organization.