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3
votes
0
answers
34
views
Can linear dispersion modes equilibrate to a diagonal ensemble?
In the literature of quantum thermalization (e.g. this review https://arxiv.org/abs/1712.08790), the consensus is that most systems even when isolated equilibrate locally. That is for a local operator …
0
votes
1
answer
38
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Equal-time Kadanoff-Baym equation for scalar field propagators
My problem is that in most of the literature on non-equilibrium field theory, the Hamiltonian formalism is used. The left and right KBE for a free theory with $H = \omega_0 c^\dagger c$ (for simplicit …
0
votes
Relation between time-ordered propagator in condensed matter and Feynman propagator
I think you are confusing two different things here. The distinction of positive and negative frequency Weightman functions in Weinberg denoted by $+$ and $-$ have nothing to do with the $\pm$ labels …