Non-Markovian Open Quantum Systems: Lorentzian from Markovian

Abstract

As a general mission, reduced dynamics and master equations are advocated as alternative method and philosophy instead of Green functions, Kubo theory and the like. A smart reduction of the Lorentzian open system to the Markovian one (Imamoglu, 1994) is presented in simple terms.Comment: Originally in Hungarian, in "New Results in Quantum Optics and Electronics" eds. Zsuzsanna Heiner and K. Osvay (University of Szeged, Szeged, 2006) p147. This version strikes through the mistaken references to the Ohmic spectru