Download or read book Quantum Statistical Mechanics: Selected Works Of N N Bogolubov written by Nickolai N Bogolubov Jr and published by World Scientific. This book was released on 2014-08-14 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book we have solved the complicated problem of constructing upper bounds for many-time averages for the case of a fairly broad class of model systems with four-fermion interaction. The methods proposed in this book for solving this problem will undoubtedly find application not only for the model systems associated with the theory of superconductivity considered here. The theoretical methods developed in Chapters 1 and 2 are already applicable to a much broader class of model systems from statistical physics and the theory of elementary particles.