Lecture Notes in Physics Monographs

2 primary works

The Quantum Theory of Measurement

by Paul Busch, etc., P.J. Lahti, and P. Mittelstaedt

Published 1 January 1991

The amazing accuracy in verifying quantum effects experimentally has recently renewed interest in quantum mechanical measurement theory. In this book the authors give within the Hilbert space formulation of quantum mechanics a systematic exposition of the quantum theory of measurement. Their approach includes the concepts of unsharp objectification and of nonunitary transformations which are needed for a unifying description of various detailed investigations. The book, which may be regarded as a first step toward a textbook on the problem of measurements, addresses advanced students and researchers in physics and philosophy of science.

Operational Quantum Physics

by Paul Busch, Marian Grabowski, and Pekka J. Lahti

Published 1 August 1995

This text offers a systematic presentation of quantum mechanics, making use of the full probabilistic structure of this theory. Accordingly, the notion of an observable as a positive operator valued (POV) measure is explained in great detail, and the ensuing quantum measurement theory is developed and applied both to a resolution of long-standing conceptual and interpretational puzzles in the foundations of quantum mechanics, and to an analysis of various recent fundamental experiments.