- #1
santale
- 6
- 0
I have a partition function in euclidean quantum field theory. I have a parameter, let's say a charge, that I can change in the action that define the partition function.
I found that for small charge the partition function is positive, but there is a critical charge, above the one the partition function becomes negative.
Which is the meaning? Could this be interpreted as a phase transition?
General question: the partition function must be positive? which is the meaning of having an imaginary or negative partition function?
Thanks
I found that for small charge the partition function is positive, but there is a critical charge, above the one the partition function becomes negative.
Which is the meaning? Could this be interpreted as a phase transition?
General question: the partition function must be positive? which is the meaning of having an imaginary or negative partition function?
Thanks