Physics – Quantum Physics
Scientific paper
2001-05-11
Time in Quantum Mechanics, eds. J. G. Muga, R. Sala Mayato, I.L. Egusquiza, Springer-Verlag, Berlin (2002) pp. 69-98. 2nd rev.
Physics
Quantum Physics
33 pages, Latex. This expanded version (prepared for the 2nd edition of "Time in quantum mechanics") contains minor correction
Scientific paper
10.1007/978-3-540-73473-4_3
The time energy uncertainty relation has been a controversial issue since the advent of quantum theory, with respect to appropriate formalisation, validity and possible meanings. A comprehensive account of the development of this subject up to the 1980s is provided by a combination of the reviews of Jammer (1974), Bauer and Mello (1978), and Busch (1990). More recent reviews are concerned with different specific aspects of the subject. The purpose of this chapter is to show that different types of time energy uncertainty relation can indeed be deduced in specific contexts, but that there is no unique universal relation that could stand on equal footing with the position-momentum uncertainty relation. To this end, we will survey the various formulations of a time energy uncertainty relation, with a brief assessment of their validity, and along the way we will indicate some new developments that emerged since the 1990s.
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