Isometries of quantum states

Details Isometries of quantum states Isometries of quantum states

2002-11-14

arxiv.org/abs/math/0211221v1

Mathematics

Operator Algebras

9 pages. To appear in J. Phys. A: Math. Gen

Scientific paper

10.1088/0305-4470/36/1/318

This paper treats the isometries of metric spaces of quantum states. We
consider two metrics on the set all quantum states, namely the Bures metric and
the one which comes from the trace-norm. We describe all the corresponding
(nonlinear) isometries and also present similar results concerning the space of
all (non-normalized) density operators.

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