Squeezed condensate of gluons and $\eta-\eta'$ mass difference
Nuclear Theory
2009-10-30 v3
Abstract
We consider a mechanism to create the mass difference by the gluon anomaly in a squeezed vacuum. We find that the mass shift of the governing this mass difference is determined by the magnetic part of the gluon condensate. For the squeezed vacuum this magnetic part coincides with the total gluon condensate, so that we get a relation between the gluon condensate and the mass shift of the as a function of the strong coupling constant . The values of the gluon condensate obtained through this relation are compared with the value by Shifman, Vainshtein and Zakharov and the recent update values by Narison.
Cite
@article{arxiv.nucl-th/9609059,
title = {Squeezed condensate of gluons and $\eta-\eta'$ mass difference},
author = {D. Blaschke and H. -P. Pavel and V. N. Pervushin and G. Röpke and M. K. Volkov},
journal= {arXiv preprint arXiv:nucl-th/9609059},
year = {2009}
}
Comments
8 pages, 1 figure included; uses elsart style, psfig style, LaTeX