arXiv:0801.1739 · International Journal of MathematicsGEOMETRY OF QUASI-FREE STATES OF CCR ALGEBRASSHIGERU YAMAGAMIPublished Apr 19, 2010• 6 citationsarXivHTMLPDFAbstractGeometric positions of square roots of quasi-free states of CCR algebras are investigated together with an explicit formula for transition amplitudes among them.DOI10.1142/s0129167x10006306