Logo Logo
Switch Language to German

Cuffaro, Michael E. and 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

Full text not available from 'Open Access LMU'.


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.

Actions (login required)

View Item View Item