A Lieb-Thirring inequality for singular values

preprint2008arXivOpen access

Abstract

Let AA and BB be positive semidefinite matrices. We investigate the conditions under which the Lieb-Thirring inequality can be extended to singular values. That is, for which values of pp does the majorisation σ(BpAp)≺wσ((BA)p)σ(B^p A^p) \prec_w σ((BA)^p) hold, and for which values its reversed inequality σ(BpAp)≻wσ((BA)p)σ(B^p A^p) \succ_w σ((BA)^p).

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