Eq. (22) indicates that at equilibrium, the rate of change of Lagrangian is equal to the negative rate of change of potential
energy. In case of isolated systems, if the change in Lagrangian with time is zero, there is temporal symmetry [6]. Thus, if
a system at equilibrium has temporal symmetry, the rate of change of potential energy with time must also be zero. Thus,
it could be stated that a thermodynamic system at equilibrium has temporal invariance only if the potential changes are
invariant in time.