Irreversibility factor and limiting performance of financial systems (thermodynamic approach)

1 introduction Thermodynamic approach to the modelling of economic systems has been developed by Samuelson ([1]), Lichnerovich ([2]), Rozonoer ([3]), Martinesh ([4]) end others ([5],[6]). The majority of these works relied on reversible thermodynamics ’ analogy. New branch of thermodynamics- Finite Time Thermodynamics (FTT)- has emerged in last decades. It studies limiting possibilities of thermodynamic systems (heat engines, separation systems etc.) caused by constraints on processes ’ duration and rates ([7] – [8]). Microeconomic analogies of these problems were studied in ([9]),([10]), ([11])). Financial systems are similar to microeconomic systems. Their distinguish-ing characteristic is the use of credit as one of traded assets. In this paper the approach, developed in ([11]), is applied to financial systems. Many problems considered in this paper can be solved without using ther-modynamic approach. But this approach allows us to consider all thes