- #1

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http://arxiv.org/abs/quant-ph/0505056

http://physics.bu.edu/~mohanty/physica-decoherence.pdf

Since I cant make much out of them, maybe except this interesting phrase in the first one

"First

of all it is intriguing that

**even at**

absolute zero a coherent superposition of states can get destroyed by zero point fluctuations."

absolute zero a coherent superposition of states can get destroyed by zero point fluctuations

But this, I dont understand what they mean by this:

"At absolute zero the quantum system

can only lose energy to the

cold environment"

And another question : From what I know, the more atoms you try to put in superposition, you need to get them closer to absolute zero, so can one deduce that theoretically at absolute zero you could have the whole universe in a superposition state ?