(Indeed, we may look at this expression is as at the difference between the total energy flow density, jε=∫εvwd3p, and the product of the average e...(Indeed, we may look at this expression is as at the difference between the total energy flow density, jε=∫εvwd3p, and the product of the average energy needed to add a particle to the system (μ) by the particle flow density, jn=∫vwd3p≡j/q.) 64 Again, at equilibrium (w=w0) the heat flow vanishes, so that w in Equation (???) may be replaced with its perturbation \(\tilde{w}\…
