Data di Pubblicazione:
2008
Citazione:
Entropy, superposition and dynamical maps / A. Zecca. - In: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS. - ISSN 0020-7748. - 47:9(2008), pp. 2230-2236. [10.1007/s10773-008-9654-9]
Abstract:
Aspects of quantum entropy and relative quantum entropy are discussed in the Hilbert model. It is shown that finite values of the relative entropy of states implies a superposition relation between the states. The property is studied in case of tensor product of states and for state reductions. A "Schmidt-like'' state, derived from the reduced states, is considered. It is shown that its entropy, relative to the product of the reduced
states, is not smaller than the entropy of the reduced states. The main existing results concerning the changement of superposition and entropy under dynamical map are recalled in a uniform way. A class of possible dynamical maps, not necessarily linear, is proposed that do not decrease the entropy.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Dynamical maps; Entropy; Nonlinear dynamical maps; Reduced state; Superposition
Elenco autori:
A. Zecca
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