Phys. Rev. Lett. 101, 061602 (2008) [4 pages]Dielectric Function of the QCD VacuumReceived 6 March 2008; published 6 August 2008 It is shown that the inverse of the ghost form factor in the Hamilton approach to Yang-Mills theory in Coulomb gauge can be interpreted as the color dielectric function of the QCD vacuum. Furthermore, the horizon condition to the ghost form factor implies that in the infrared the QCD vacuum is a perfect color diaelectric medium and therefore a dual superconductor. The dielectric function is explicitly calculated within a previously developed variational approach, using a specific ansatz for the vacuum wave functional. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.061602
DOI:
10.1103/PhysRevLett.101.061602
PACS:
12.38.Aw, 11.10.Ef, 12.38.Cy, 12.38.Lg
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