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A Free Probability Analogue of the Wasserstein Metric on the Trace-State Space

Philippe Biane, Dan Voiculescu

math.OAarXiv:math/0006044

Abstract

We define a free probability analogue of the Wasserstein metric, which extends the classical one. In dimension one, we prove that the square of the Wasserstein distance to the semi-circle distribution is majorized by a modified free entropy quantity.

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