Negativity of the Coarse Grained Wigner Function as a Measure of Quantal Behavior

Details Negativity of the Coarse Grained Wigner Function as a Measure of Quantal Behavior Negativity of the Coarse Grained Wigner Function as a Measure of Quantal Behavior

2008-11-18

arxiv.org/abs/0811.2924v1

Physics

Quantum Physics

6 pages, 4 figures

Scientific paper

The negativity of a given state's Wigner function has been proposed as a measure of quantumness of that state in a unipartite system. This otherwise physically intuitive and useful phase-space measure however does not yield the right correspondence principle limit, and also turns out to yield infinite values for the infinite square well. We show that both these issues can be sensibly resolved using coarse-graining of the Wigner function.

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