Related papers: Symmetry operations and Critical Behaviour in Classical to Quantum Stochastic Processes

Symmetry operations and Critical Behaviour in Classical to Quantum Stochastic Processes

URL: http://arxiv.org/abs/2409.09277v2
Date: Tue, 17 Dec 2024 00:45:51 GMT
Title: Symmetry operations and Critical Behaviour in Classical to Quantum Stochastic Processes
Authors: Gustavo Montes, Soham Biswas, Thomas Gorin,
Abstract summary: We show that the relaxation processes unfold very differently for the different quantum extensions. We find a rather ambiguous relation between the coherence measure based on the L1-norm and the speed of the relaxation process.
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Abstract: Recently, a novel construction scheme for generating quantum analogs of classical stochastic processes has been introduced. Here, we use this scheme in order to generate a large class of self-contained quantum extensions of a classical Markov chain process using symmetry operations. We show that the relaxation processes unfold very differently for the different quantum extensions. This is supported by monitoring the coherence, the probability of reaching the equilibrium, the decay of the number of domain walls and the purity. Unexpectedly, we find a rather ambiguous relation between the coherence measure based on the L1-norm and the speed of the relaxation process. Finally we find that the finite size scaling of the coherence measure exists for both short and long times and the value of the critical exponent is different for the short and long time.

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