Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1993-05-24
Phys.Rev.D48:3377-3382,1993
Physics
High Energy Physics
High Energy Physics - Lattice
19 pages, 4 Figures(provided), LSU-431-93
Scientific paper
10.1103/PhysRevD.48.3377
We derive different representations of compact QED fixed to Landau gauge by the lattice Faddeev-Popov procedure. Our analysis finds that (A)Nielsen-Olesen vortices arising from the compactness of the gauge-fixing action are {\it quenched\/}, that is, the Faddeev-Popov determinant cancels them out and they do not influence correlation functions such as the photon propagator; (B)Dirac strings are responsible for the nonzero mass pole of the photon propagator. Since in $D=3+1$ the photon mass undergoes a rapid drop to zero at $\beta_c$, the deconfinement point, this result predicts that Dirac strings must be sufficiently dilute at $\beta > \beta_c$. Indeed, numerical simulations reveal that the string density undergoes a rapid drop to near zero at $\beta\sim \beta_c$.
Polikarpov Mikhail I.
Yee Ken
Zubkov M. . A.
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