Bimodule KMS Symmetric Quantum Markov Semigroups and Gradient Flows
Operator Algebras
2026-05-01 v3 Functional Analysis
Abstract
The bimodule KMS symmetry of a bimodule quantum Markov semigroup extends the classical KMS symmetry of a quantum Markov semigroup. Compared with (bimodule) GNS symmetry, the (bimodule) KMS symmetry retains significantly more of the underlying noncommutativity. In this paper, we study bimodule KMS symmetric quantum Markov semigroups and introduce directional matrices for such semigroups, which reduce to diagonal matrices in the GNS symmetric setting. Using these directional matrices, we establish a corresponding gradient-flow structure. As a consequence, we obtain both a modified logarithmic Sobolev inequality and a Talagrand inequality for bimodule KMS symmetric quantum Markov semigroups.
Cite
@article{arxiv.2511.04881,
title = {Bimodule KMS Symmetric Quantum Markov Semigroups and Gradient Flows},
author = {Chunlan Jiang and Jincheng Wan and Jinsong Wu},
journal= {arXiv preprint arXiv:2511.04881},
year = {2026}
}