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We study the flux tubes produced by static quark-antiquark, quark-quark andquark-gluon charges at finite temperature in pure gauge SU(3) lattice QCD. Oursources are static and our lattice correlators are composed of fundamental andadjoint Polyakov loops. To signal the flux tubes, we compute the squaredensities of the chromomagnetic and chromoelectric fields with plaquettes, in agauge invariant framework. We study the existence and non-existence of fluxtubes both above and below the deconfinement phase transition temperature Tc.Using the Lagrangian density as a probability distribution, we also compute thewidths of the flux tubes and study their widening as a function of theintercharge distance. We determine our results with both statistical andsystematic errors. Our computations are performed in NVIDIA GPUs using the CUDAlanguage.

Pure gauge QCD flux tubes and their widths at finite temperature