Studies in History and Philosophy of Science Part B 30 (1):41-60 (1999)
I analyse two different methods for the retrieval of a classical notion of spacetime from the theory of quantum cosmology in terms of the different means they employ to bring about the necessary loss of coherence. One method employs a direct coarse graining of the appropriate phase space, whereas the other method is based on decohering the system by the interaction with an environment. Although these methods are equivalent on a phenomenological level, I argue that conceptually the decoherence approach is superior. The coarse graining approach construes the necessary loss of coherence in epistemic terms, whereas the method based on decohering the system by interaction with an environment provides a dynamical explanation for the emergence of classical notions of spacetime. On the latter account the emergence of classical behaviour is an objective property of the physical system under consideration, in contradistinction with the subjective coarse graining account of the retrieval of a classical spacetime in terms of measurements made by an observer.
|Keywords||No keywords specified (fix it)|
|Categories||categorize this paper)|
References found in this work BETA
No references found.
Citations of this work BETA
No citations found.
Similar books and articles
Can the Decoherence Approach Help to Solve the Measurement Problem?Osvaldo Pessoa - 1997 - Synthese 113 (3):323-346.
Self-Induced Selection: A New Approach to Quantum Decoherence.Mario Castagnino & Olimpia Lombardi - unknown
Undecidability and the Problem of Outcomes in Quantum Measurements.Rodolfo Gambini, Luis Pedro Garcia Pintos & Jorge Pullin - 2010 - Foundations of Physics 40:93-115.
Self-Induced Decoherence and the Classical Limit of Quantum Mechanics.Mario Castagnino & Olimpia Lombardi - 2005 - Philosophy of Science 72 (5):764-776.
The Coarse-Graining Approach to Statistical Mechanics: How Blissful is Our Ignorance?K. Ridderbos - 2002 - Studies in History and Philosophy of Science Part B 33 (1):65-77.
Added to index2009-01-28
Total downloads182 ( #24,642 of 2,170,053 )
Recent downloads (6 months)1 ( #345,514 of 2,170,053 )
How can I increase my downloads?