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Continuous Quantum Measurements and Path Integrals - M. B. Mensky

Continuous Quantum Measurements and Path Integrals

Hardcover

Published: 1st January 1993
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Advances in technology are taking the accuracy of macroscopic as well as microscopic measurements close to the quantum limit, for example, in the attempts to detect gravitational waves. Interest in continuous quantum measurements has therefore grown considerably in recent years. Continuous Quantum Measurements and Path Integrals examines these measurements using Feynman path integrals. The path integral theory is developed to provide formulae for concrete physical effects. The main conclusion drawn from the theory is that an uncertainty principle exists for processes, in addition to the familiar one for states. This implies that a continuous measurement has an optimal accuracy-a balance between inefficient error and large quantum fluctuations (quantum noise). A well-known expert in the field, the author concentrates on the physical and conceptual side of the subject rather than the mathematical.

Preface
Introduction to Continuous Quantum Measurementsp. 1
Instantaneous and Sequential Measurementsp. 12
Technique of Path Integralsp. 35
Continuous Measurement and Evolution of the Measured Systemp. 48
Continuous Measurements of Oscillatorsp. 66
Continuous Quantum Nondemolition Measurementsp. 92
Measurement of an Electromagnetic Fieldp. 110
Time in Quantum Cosmologyp. 123
The Action Uncertainty Principlep. 138
Group-Theoretical Structure of Quantum Continuous Measurementsp. 155
Paths and Measurements: Further Developmentsp. 168
Referencesp. 182
Indexp. 187
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780750302289
ISBN-10: 0750302283
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 188
Published: 1st January 1993
Publisher: Taylor & Francis Ltd
Country of Publication: GB
Dimensions (cm): 23.5 x 15.6  x 1.2
Weight (kg): 0.48
Edition Number: 1