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The study of open quantum systems is concerned with understanding and predicting the dynamics of quantum systems that are coupled significantly to their surroundings, leading to effects such as dissipation and decoherence.

1 vote
0 answers
391 views

How do you compute saddle point approximation of path integral for open quantum system?

Note: the question in this post is basically originated from here. Please refer to it first if you don't get the sense. I'd like to know how you compute the saddle point approximation in the path inte …
cosmiccosmo's user avatar
4 votes
1 answer
523 views

Is $ \hbar \rightarrow 0 $ in path integral merely technical thing? Is there any justificati...

I wonder whether the limit $ \hbar \rightarrow 0 $ in path integral is merely technical stuff when we explain the classical limit of quantum mechanics, or there may be any physical meaning or sense be …
cosmiccosmo's user avatar