SU(2) Gluon Propagators and the Asymmetry 〈ΔA2〉 in the Postconfinement Domain

We study numerically the chromoelectric-chromomagnetic asymmetry of the A2 gluon condensate as well as the transverse and longitudinal gluon propagators at T > Tc in the Landau-gauge SU(2) lattice gauge theory. We show that the previously found point at which asymmetry changes sign is an artifact of the finite volume effects. We find that with increasing temperature the asymmetry decreases approaching zero value from above in agreement with perturbative result. Instead of the asymmetry we suggest the ratio of the transverse to longitudinal propagator taken at zero momentum as an indicator of the boundary of the postconfinement domain and find it at T ≃ 1.7Tc.