Entropy, Divergence, and Majorization in Classical and Quantum Thermodynamics - Paperbackby Takahiro Sagawa (Author) Rich information theoretic structure in out of equilibrium thermodynamics exists in both the classical and quantum regimes, leading to the fruitful interplay among statistical physics, quantum information theory, and mathematical theories such as matrix analysis and asymptotic probability theory. The main purpose of this book is to clarify how information theory works behind thermodynamics and to shed modern light on it.