On the universal constraints for relaxation rates for quantum dynamical semigroup

• URL: http://arxiv.org/abs/2011.10159v1
• Date: Fri, 20 Nov 2020 00:40:13 GMT
• Title: On the universal constraints for relaxation rates for quantum dynamical semigroup
• Authors: Dariusz Chruscinski, Gen Kimura, Andrzej Kossakowski, Yasuhito Shishido
• Abstract summary: A conjecture for the universal constraints for relaxation rates of a quantum dynamical semigroup is proposed. It holds for several interesting classes of semigroups, e.g. unital semigroups and semigroups derived in the weak coupling limit from the proper microscopic model.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A conjecture for the universal constraints for relaxation rates of a quantum dynamical semigroup is proposed. It is shown that it holds for several interesting classes of semigroups, e.g. unital semigroups and semigroups derived in the weak coupling limit from the proper microscopic model. Moreover, proposed conjecture is supported by numerical analysis. This conjecture has several important implications: it allows to provide universal constraints for spectra of quantum channels and provides necessary condition to decide whether a given channel is consistent with Markovian evolution.

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