Keldysh and Doi-Peliti Techniques for out-of-Equilibrium Systems

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/18268Lecture notes presented at Windsor NATO school on "Field Theory of Strongly Correlated Fermions and Bosons in Low-Dimensional Disordered Systems" (August 2001). The purpose of these lectures is to give a brief modern introduction to Keldysh non-equilibrium field theory and its classical analog - Doi-Peliti technique. The special emphasis is put on stressing the analogy between the two approaches.19 pagesMesoscale and Nanoscale PhysicsDisordered Systems and Neural NetworksKeldysh and Doi-Peliti Techniques for out-of-Equilibrium Systemstext