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Relationship between measurement and temperature

  1. Jul 25, 2015 #1
    A system at absolute zero (ground state) can't be be divided into observer and observed, can it?

    I'm struggling with the relationship between superposition, decoherence and temperature. Decoherence requires information. Information requires energy. Though multiple basis of "information" can support decoherence or inhibit it (all kinds of properties can be measured, or not measured) Temperature factors into all of those doesn't it?
    Last edited: Jul 25, 2015
  2. jcsd
  3. Jul 25, 2015 #2
    Yes. In Quantum Theory there is still energy-- Vacuum State / lowest possible energy state of a quantum system. It has quantum fluctuations consistent with the ΔEΔt>h Uncertainty Principle. In GR, we can create a mental picture of zero -- Minkowski spacetime.

    Depending on what you meant by vacuum(GR vacuum, QM vacuum and FT vacuum. In FT vacuum ground state is separated by fields. It only happens when interaction occured which in term modify the once FT vacuum to the usual QM vacuum (lowest energy) where all the weird stuff is happening.

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