Artigo
Dressed (renormalized) coordinates in a nonlinear system
Fecha
2005-08-26Registro en:
Journal of Physics A-mathematical and General. Bristol: Iop Publishing Ltd, v. 38, n. 34, p. 7527-7541, 2005.
0305-4470
10.1088/0305-4470/38/34/007
WOS:000231933500010
Autor
Universidade Estadual Paulista (Unesp)
Centro Brasileiro de Pesquisas Físicas (CBPF)
Resumen
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.