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We utilize Polyakov loop correlations to study (3+1)D compact U(1) flux tubesand the static electron-positron potential in lattice gauge theory. By usingfield operators it is possible in U(1) lattice gauge theory to probe directlythe electric and magnetic fields. In order to improve the signal-to-noise ratioin the confinement phase, we apply the L\"uscher-Weiss multilevel algorithm.Our code is written in CUDA, and we run it in NVIDIA FERMI generation GPU's, inorder to achieve the necessary performance for our computations.

Study of compact U(1) flux tubes in 3+1 dimensions in lattice gauge theory using GPU's