Optimizing entropy relative to a channel or a subalgebra
Quantum Physics
2007-05-23 v1
Abstract
After recalling definition, monotonicity, concavity, and continuity of a channel's entropy with respect to a state (finite dimensional cases only), I introduce the roof property, a convex analytic tool, and show its use in treating an example. Full proofs and more examples will appear elsewhere. The relation (a la Benatti) to accessible information is mentioned.
Keywords
Cite
@article{arxiv.quant-ph/9701014,
title = {Optimizing entropy relative to a channel or a subalgebra},
author = {Armin Uhlmann},
journal= {arXiv preprint arXiv:quant-ph/9701014},
year = {2007}
}
Comments
7 pages, latex, no figures. To be published in: Proceedings of the XXI International Colloquium on Group Theoretical Methods in Physics, Goslar 1996