12 citations · 16 across the 3 of their papers we have counts for
3 papers
math-ph2001
On Infravacua and the Superselection Structure of Theories with Massless Particles
Walter Kunhardt
In quantum field theories with massless particles, states carrying a nontrivial superselection charge may have very poor localisation properties when compared to the vacuum. In thi…
math-ph1998★ 12 cited
On Infravacua and the Localisation of Sectors
Walter Kunhardt
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 resp…
hep-th1997★ 4 cited
On Infravacua and Superselection Theory
Walter Kunhardt
In the DHR theory of superselection sectors, one usually considers states which are local excitations of some vacuum state. Here, we extend this analysis to local excitations of a…