Observation: more decoherence or interference?

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Does observation decohere the object, or also interfere with the observer, to manifest macroscopic reality? A classical measurement might result either from equilibrium of object phase itself or of phase difference relative to the observer.

How, then, do these large-scale effects of object assimilation compare to those of interaction with the observer? What you sense directly - is it so because of its own decohered aggregate quantum nature, or because that other aggregate decohered along with you the observer?
 

jcsd

Science Advisor
Gold Member
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NO, decoherence isn't to do with observation, a large quantum system will suffer decoherence before any measuremnt is made on it. It's just the tendency of very large quantum systems to behave classically.
 

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