A thought construction of working perpetuum mobile of the second kind

The previously published model of the isothermal Maxwell demon as one of mo dels of open quantum systems endowed with the faculty of selforganization i s reconstructed here. It describes an open quantum system interacting with a single thermodynamic bath but otherwise not aided from outside. Its activ ity is given by the standard linear Liouville equation for the system and b ath. Owing to its selforganization property, the model then yields cyclic c onversion of heat from the bath into mechanical work without compensation. Hence, it provides an explicit thought construction of perpetuum mobile of the second kind, contradicting thus the Thomson formulation of the second l aw of thermodynamics. No approximation is involved as a special scaling pro cedure is used which makes the employed kinetic equations exact.