On 1/22/2014 6:25 PM, LizR wrote:
On 23 January 2014 12:53, meekerdb <meeke...@verizon.net <mailto:meeke...@verizon.net>>
wrote:
By having interacted in the (distant) past. If the universe is a pure
quantum state
then it has zero entropy, which means that all the complexity and
information we see
is a local phenomena due to our being quasi-classical, i.e. we are
effectively
'coarse graining' the world. From this standpoint the positive information
we see
must be cancelled by correlations, negative information, which are
ubiquitous.
I see. So in theory the entire universe is full of entangled particle pairs due to them
having once upon a time all lived together in the Big Bang (to misquote Italo Calvino).
Wouldn't those entanglements quickly get decohered by interaction with the environment,
though?
Yeah, but decoherence just makes things look classical at a coarse-grained level (when we
trace over the environment). Microscopically it's spreading the superposition.
Brent
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