The Thermodynamical Arrow of Time

  • H.-Dieter Zeh


The thermodynamical arrow of time is characterized by the increase of entropy according to the Second Law, usually formulated as
$$\frac{{dS}}{{dt}} = {\{ \frac{{dS}}{{dt}}\} _{ext}} + {\{ \frac{{dS}}{{dt}}\} _{\operatorname{int} }}\;with\;d{S_{ext}} = \frac{{dQ}}{T}and{\{ \frac{{dS}}{{dt}}\} _{\operatorname{int} }} \geqslant 0$$


Master Equation Liouville Equation Irrelevant Information Liouville Operator Macroscopic State 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • H.-Dieter Zeh
    • 1
  1. 1.Institut für Theoretische PhysikUniversität HeidelbergHeidelbergFed. Rep. of Germany

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