Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2002-12-02
Phys.Lett. B555 (2003) 206-214
Physics
High Energy Physics
High Energy Physics - Lattice
12 pages, 11 figures, LaTeX2e
Scientific paper
10.1016/S0370-2693(03)00059-5
We study the Landau gauge photon propagator in the three--dimensional Abelian Higgs model with compact gauge field and fundamentally charged matter in the London limit. The total gauge field is split into singular and regular parts. On the confinement side of the string breaking crossover the momentum dependence of the total propagator is characterized by an anomalous dimension similarly to 3D compact QED. At the crossover and throughout the Higgs region the anomalous dimension disappears. This result perfectly agrees with recent observations that the monopole--antimonopole plasma leads to nonzero anomalous dimension and the presence of the matter fields causes monopole pairing into dipole bound states. The Yukawa mass characterizing the propagator part from regular gauge fields is non-vanishing at the Higgs side and coincides with the mass found for the total propagator. The regular gauge field without anomalous dimension becomes massless at the crossover and in the confinement region.
Chernodub Maxim N.
Ilgenfritz Ernst-Michael
Schiller Avraham
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