Originally published in 1981, this book forms volume 15 of the Encyclopedia of Mathematics and its Applications. The text provides a clear and thorough treatment of its subject, adhering to a clean exposition of the mathematical content of serious formulations of rational physical alternatives of quantum theory as elaborated in the influential works of the period, to which the authors made a significant contribution. The treatment falls into three distinct, logical parts: in the first part, the modern version of accumulated wisdom is presented, avoiding as far as possible the traditional...

Papers from the 1994 meeting represent a broad review of contemporary experimental work on quantum phenomena, emphasizing state-of-the-art experimental science. Useful as an introductory manual for young researchers, the volume addresses topics that include: experiments with single and ultracold ato

2 EnricoBeltrametti 1andJean-MarcLevy-Leblond 1Dipartimentodi Fisica, Universitadi Genova ViaDodecaneso33,1-16146 Genova, Italy 2physiqueTheorique, Universitede NiceSophia-Antipolis Pare Valrose, F-06108 Nice Cedex, France As customary, the idea of this meeting was born out during another one. The present authors were attending some colloquium among the numerous meetings devoted to the endless discussion of the foundational problems of quantum theory, when it struck their minds that physics, after all, was also an experimental science. Maybe, they thought to themselves, our very understanding...