Graphs whose normalized Laplacian matrices are separable as density matrices in quantum mechanics
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Publication:906486
DOI10.1016/J.DISC.2015.12.001zbMATH Open1329.05202arXiv1407.5663OpenAlexW193033860MaRDI QIDQ906486
Author name not available (Why is that?)
Publication date: 21 January 2016
Published in: (Search for Journal in Brave)
Abstract: Recently normalized Laplacian matrices of graphs are studied as density matrices in quantum mechanics. Separability and entanglement of density matrices are important properties as they determine the nonclassical behavior in quantum systems. In this note we look at the graphs whose normalized Laplacian matrices are separable or entangled. In particular, we show that the number of such graphs is related to the number of 0-1 matrices that are line sum symmetric and to the number of graphs with at least one vertex of degree 1.
Full work available at URL: https://arxiv.org/abs/1407.5663
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