Talk:Quantum statistical mechanics

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"This can be shown under various mathematical formalisms for quantum mechanics. One such formalism is provided by quantum logic."

What exactly can be shown? --129.7.56.26 18:32, 4 February 2006 (UTC)

That
A statistical ensemble is described by a density operator S, which is a non-negative, self-adjoint, trace-class operator of trace 1 on the Hilbert space H describing the quantum system.
--CSTAR 18:44, 4 February 2006 (UTC)


Is the use of the non-standard Exp(A) to represent the expectation value A a good idea? It's massively confusing given that exp(x) is typically taken as e^x.

Ugh. This whole article needs a major overhaul. It's got lots of non-standard notation, and the treatment is very shallow. linas (talk) 22:26, 3 September 2008 (UTC)

Why does "quantum ensemble" redirect to this article that doesn't explain what a quantum ensemble is? I'm tagging it for deletion. Maybe someone will replace it with a less terrible article.69.107.204.78 (talk) 19:20, 12 September 2011 (UTC)

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