Color Screening by Pions

William Detmold, Martin J. Savage
2009 Physical Review Letters  
Lattice QCD is used to calculate the potential between a static quark and anti-quark in the presence of a finite density of pi^+'s. Correlation functions of multiple pi^+'s are used in conjunction with Wilson-loop correlators to determine the difference between the QQ-potential in free-space and in the presence of a pion condensate. The modifications to the potential are found to have significant dependence on the QQ separation over the range r < 1 fm explored in this work. Our results are
more » ... stent with the pion-condensate behaving as a (nonlinear) chromo-dielectric.
doi:10.1103/physrevlett.102.032004 pmid:19257346 fatcat:o4oar4anpzebbfsrxdoifhgfym