Lattice QCD is used to calculate the potential between a static quark and antiquark 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 < or approximately 1 fm explored in this work. Our results are consistent with the pion-condensate behaving as a (nonlinear) chromodielectric.
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| http://dx.doi.org/10.1103/PhysRevLett.102.032004 | DOI Listing |
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