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Parametrizations of Positive Matrices With Applications

M. C. Tseng·Hong Zhou·V. Ramakrishna
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Abstract

This paper reviews some characterizations of positive matrices and discusses which lead to useful parametrizations. It is argued that one of them, which we dub the Schur-Constantinescu parametrization is particularly useful. Two new applications of it are given. One shows all block-Toeplitz states are PPT. The other application is to relaxation rates.

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M. C. Tseng, Hong Zhou, V. Ramakrishna. 2006-10-03. Parametrizations of Positive Matrices With Applications. https://arxiv.org/abs/quant-ph/0610020

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