- #1

ohannuks

- 32

- 2

The usual way of doing things in classical mechanics is to assume [itex]\frac{dN}{dt}= 0[/itex] and go from there; but Boltzmann eq. can also be derived starting from maximizing entropy.

I wonder if there is any similar derivation for e.g. quantum field theory or just special/general relativistic theory. The assumption [itex]\frac{dN}{dt}= 0[/itex] is not applicable in the quantum field theory.