In Henk W. de Regt (ed.), Epsa Philosophy of Science: Amsterdam 2009. Springer. pp. 161--174 (2010)
AbstractAccording to the environment-induced approach to decoherence, the split of the Universe into the degrees of freedom which are of direct interest to the observer and the remaining degrees of freedom is absolutely essential for decoherence. However, the EID approach offers no general criterion for deciding where to place the “cut” between system and environment: the environment may be “external” or “internal”. The main purpose of this paper is to argue that decoherence is a relative phenomenon, better understood from a closed-system perspective according to which the split of a closed quantum system into an open subsystem and its environment is just a way of selecting a particular space of relevant observables of the whole closed system. In order to support this claim, we shall consider the results obtained in a natural generalization of the simple spin-bath model usually studied in the literature. Our main thesis will lead us to two corollaries. First, the problem of identifying the system that decoheres is actually a pseudo-problem, which vanishes as soon as one acknowledges the relative nature of decoherence. Second, the usually supposed link between decoherence and energy dissipation is misguided. As previously pointed out, energy dissipation and decoherence are different phenomena, and we shall argue for this difference on the basis of the relative nature of decoherence
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References found in this work
Dretske, Shannon’s Theory and the Interpretation of Information.Olimpia I. Lombardi - 2005 - Synthese 144 (1):23-39.
A General Conceptual Framework for Decoherence in Closed and Open Systems.Mario Castagnino, Roberto Laura & Olimpia Lombardi - 2007 - Philosophy of Science 74 (5):968-980.
Self-Induced Decoherence: A New Approach.Mario Castagnino & Olimpia Lombardi - 2004 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 35 (1):73-107.
Self-Induced Decoherence: A New Approach.Mario Castagnino & Olimpia Lombardi - 2003 - Studies in History and Philosophy of Modern Physics 35 (1):73-107.
Citations of this work
Quantum Mereology: Factorizing Hilbert Space Into Subsystems with Quasi-Classical Dynamics.Sean M. Carroll & Ashmeet Singh - 2021 - Physical Review A 103 (2):022213.
Formal Causation in Integrated Information Theory: An Answer to the Intrinsicality Problem.Javier Sánchez-Cañizares - 2021 - Foundations of Science 27 (1):77-94.
Classicality First: Why Zurek’s Existential Interpretation of Quantum Mechanics Implies Copenhagen.Javier Sánchez-Cañizares - 2019 - Foundations of Science 24 (2):275-285.
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