Physical Review LettersComment on “Completely Positive Quantum Dissipation”Robert F. O’ConnellPublished Jun 20, 2001• 19 citationsPublisherAbstractA Comment on the Letter by Bassano Vacchini, Phys. Rev. Lett. 84, 1374 (2000). The authors of the Letter offer a Reply. © 2001 The American Physical Society.DOI10.1103/physrevlett.87.028901