Download an abstract of this volume The Theory of Interacting Systems: Volume 5 QUANTUM THERMODYNAMICS Until the very stars unwind... Quantum thermodynamics is concerned with the macroscopic consequences of quantum mechanics. Thermodynamic quantities are represented as time-dependent expectation values of operators computed in the volume occupied by a body. These quantities, and operators for computing their volume and temperature derivatives, are united in a spacetime formalism for quantum thermodynamics that is consistent with quantum mechanics. Equilibrium quantum thermodynamics is included as a special asymptotic case of the general theory. The resulting formalism is illustrated by an examination of the thermodynamics of stars. Entropy remains the most difficult concept of thermodynamics. It is approached through an examination of a connection between entropy and probability proposed by Boltzmann and later used by Planck in his theory of blackbody radiation. A detailed analysis of this idea is followed in the subsequent work of Planck, Einstein, Lorentz, Poincaré, Bose, von Neumann, Fowler, and many others. © 2001, MicroAnalytix. Book covers, logo, and site design by Strongrrl.