Heat capacity in nonequilibrium steady states

  title={Heat capacity in nonequilibrium steady states},
  author={E. Boksenbojm and Christian Maes and Karel Netocny and Jiř{\'i} Pe{\vs}ek},
We show how to extend the concept of heat capacity to nonequilibrium systems. The main idea is to consider the excess heat released by an already dissipative system when slowly changing the environment temperature. We take the framework of Markov jump processes to embed the specific physics of small driven systems and we demonstrate that heat capacities can be consistently defined in the quasistatic limit. Away from thermal equilibrium, an additional term appears to the usual energy-temperature… CONTINUE READING