Dressed (renormalized) coordinates in a nonlinear system
Abstract
In previous publications, the concepts of dressed coordinates and dressed states have been introduced in the context of a harmonic oscillator linearly coupled to an infinity set of other harmonic oscillators. In this paper, we show how to generalize such dressed coordinates and states to a nonlinear version of the mentioned system. Also, we clarify some misunderstandings about the concept of dressed coordinates. Indeed, now we prefer to call them renormalized coordinates to emphasize the analogy with the renormalized fields in quantum field theory.
 Publication:

Journal of Physics A Mathematical General
 Pub Date:
 August 2005
 DOI:
 10.1088/03054470/38/34/007
 arXiv:
 arXiv:physics/0410238
 Bibcode:
 2005JPhA...38.7527F
 Keywords:

 Atomic Physics;
 General Physics
 EPrint:
 LaTex, 20 pages