Learning Notebook - David Rostcheck
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In quantum world things are routinely in multiple states at once - what we call a “superposition” of states. But in the classical world of large scales, things are either this or that. The famous thought experiment is Schrodinger’s cat - in which a cat is in an opaque box with a vial of deadly poison that’s released on the radioactive decay of an atom. Quantum mechanics tells us that the atom’s wavefunction can be in a superposition of states - simultaneously decayed or not decayed. So is the cat’s wavefunction also in a superposition of both dead and alive.
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Decoherence (transmission of information into observer and environment). Pointer states are related to things impactful to measure (ex. position) and selected for by environment (robustly shared among entanglement network, which has consensus on position). Zurek - quantum darwinism.
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