Abstract
Obtaining the classical limit of quantum mechanics turns out to be conceptually and operationally non-trivial and, even today, some of the experts consider this issue to be unsettled. There is a function, originally devised by Wigner, which plays a key role in this aspect and throws some light on the w ay the classical world emerges from the quantum description.
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Some of the pedagogical details regarding Wigner functions can be found in the article, WB Case, Am. J. Phys., Vol.76, p.937, 2008.
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T Padmanabhan works at IUCAA, Pune and is interested in all areas of theoretical physics, especially those which have something to do with gravity.
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Padmanabhan, T. Snippets of physics. Reson 14, 934–943 (2009). https://doi.org/10.1007/s12045-009-0091-8
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DOI: https://doi.org/10.1007/s12045-009-0091-8