Author

Zhuo-Yu Xian

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Preprint Sep 2026

A new product entropy

We propose a new product entropy, defined as the R\'enyi (or von Neumann) entropy of a normalized product operator constructed from two density matrices. We establish a duality showing that the SVD entanglement entropy of a subsystem for two pure states is exactly equivalent to the product entropy of the complementary...

Jiaju Zhang, Zhuo-Yu Xian, René Meyer et al. · 0 citations