Hi all, I know how if a statistical partition function is written as a path integral in imaginary time (Wick's rotation) the fluctuations around the mean-field represent thermal fluctuations. If the path integral is instead done in real time then fluctuations from the mean-field/classical minima represent quantum fluctuations. My question is: is it possible to describe in one equation for the partition function BOTH thermal and quantum fluctuations? I assume in terms of a path integral. Thanks in advance.