2013/07/02 by Tetsuro Saso, Saso, Tetsuro
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech #quant-ph
paper · pdf · doi:10.48550/arxiv.1307.0610
4 pages, 1 figure
arxiv created 2013/07/02 · arxiv updated 2013/07/03
Starting from the quantum mechanics for N particles, we show that we can directly derive the microcanonical ensemble average of the physical quantity A by using only the long time average and the equal probability assumption for the equal energy states. The system is considered to be embedded in the outer world and we describe them in terms of the density matrix method.