On Infravacua and the Localisation of Sectors
Mathematical Physics
2009-10-31 v2 High Energy Physics - Theory
math.MP
Abstract
A certain class of superselection sectors of the free massless scalar field in 3 space dimensions is considered. It is shown that these sectors, which cannot be localised with respect to the vacuum, acquire a much better localisation, namely in spacelike cones, when viewed in front of suitable ``infravacuum'' backgrounds. These background states coincide, essentially, with a class of states introduced by Kraus, Polley and Reents as models for clouds of infrared radiation.
Keywords
Cite
@article{arxiv.math-ph/9806003,
title = {On Infravacua and the Localisation of Sectors},
author = {Walter Kunhardt},
journal= {arXiv preprint arXiv:math-ph/9806003},
year = {2009}
}
Comments
LaTeX, 18 pages, minor corrections in order to conform with published version