Open Quantum Random Walks and Quantum Markov chains on Trees I: Phase transitions
Abstract
In the present paper, we construct QMC (Quantum Markov Chains) associated with Open Quantum Random Walks such that the transition operator of the chain is defined by OQRW and the restriction of QMC to the commutative subalgebra coincides with the distribution ℙρ of OQRW. However, we are going to look at the probability distribution as a Markov field over the Cayley tree. Such kind of consideration allows us to investigate phase transition phenomena associated for OQRW within QMC scheme. Furthermore, we first propose a new construction of QMC on trees, which is an extension of QMC considered in [10]. Using such a construction, we are able to construct QMCs on tress associated with OQRW. Our investigation leads to the detection of the phase transition phenomena within the proposed scheme. This kind of phenomena appears for the first time in this direction. Moreover, mean entropies of QMCs are calculated.
 Publication:

Open Systems and Information Dynamics
 Pub Date:
 2022
 DOI:
 10.1142/S1230161222500032
 arXiv:
 arXiv:2208.03770
 Bibcode:
 2022OSID...2950003M
 Keywords:

 Open quantum random walks;
 quantum Markov chain;
 Cayley tree;
 disordered phase;
 phase transition;
 Mathematical Physics;
 Mathematics  Functional Analysis;
 Mathematics  Operator Algebras;
 Quantum Physics;
 46L53;
 46L60;
 82B10;
 81Q10
 EPrint:
 17 pages, Open Systems &