Antiscreening of the Ampere force in QED and QCD plasmas
classification
✦ hep-lat
hep-phnucl-th
keywords
chargescurrentselectricplasmaamountsampereantiscreeningbroken
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The static forces between electric charges and currents are modified at the loop level by the presence of a plasma. While electric charges are screened, currents are not. The effective coupling constant at long distances is enhanced in both cases as compared to the vacuum, and by different amounts, a clear sign that Lorentz symmetry is broken. We investigate these effects quantitatively, first in a QED plasma and secondly using non-perturbative simulations of QCD with two light degenerate flavors of quarks.
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