On the Debate Concerning the Proper Characterization of Quantum Dynamical Evolution

Cuffaro, Michael E.; Myrvold, Wayne C. (2013): On the Debate Concerning the Proper Characterization of Quantum Dynamical Evolution. In: Philosophy of Science, Vol. 80, No. 5: pp. 1125-1136

Abstract

There has been a long-standing and sometimes passionate debate between physicists over whether a dynamical framework for quantum systems should incorporate not completely positive (NCP) maps in addition to completely positive (CP) maps. Despite the reasonableness of the arguments for complete positivity, we argue that NCP maps should be allowed, with a qualification: these should be understood, not as reflecting ‘not completely positive’ evolution, but as linear extensions, to a system’s entire state space, of CP maps that are only partially defined. Beyond the domain of definition of a partial-CP map, we argue, much may be permitted.

• Item Type: Journal article
• Faculties: Philosophy, Philosophy of Science and Religious Science > Munich Center for Mathematical Philosophy (MCMP); Philosophy, Philosophy of Science and Religious Science > Munich Center for Mathematical Philosophy (MCMP) > Philosophy of Physics
• Subjects: 100 Philosophy and Psychology > 100 Philosophy
• ISSN: 00318248
• Language: English