The Canonical Operator In Manyparticle Problems And Quantum Field Theory V P Maslov by V P Maslov, O Y Shvedov 9783110762389, 9783110762709, 9783110762747, 3110762382, 3110762706, 3110762749 instant download after payment.

From the preface:
This book deals with the approximate solution of equations with a small parameter for functions whose number of arguments tends to infinity as the small parameter tends to zero. Such equations often arise in applications. At the same time, known asymptotic methods [13, 17, 24–27, 85, 86], only apply to equations for functions of a fixed number of arguments. In the present book, we develop a new asymptotic method, which permits one to construct approximations for functions of a large number of arguments. It turns out that various equations corresponding to various physical problems can be studied by one and the same method. In statistical physics, one often studies the problem of N classical particles mov- ing in an external field and interacting with one another under the following assump- tions: the external potential is of the order of unity, and the coefficient multiplying the interaction potential is of the order of 1/N.