Magnetic confinement and screening masses

Confined and deconfined phases are defined through nonperturbative correlators and nonperturbative background per-turbation theory is used to compute the critical temperature Tc and spatial string tension. Taking evolution along one of the spatial axes the set of Hamiltonians H(n1, n2) with different Matsubara frequencies is obtained. Meson and glueball screening masses and wave functions are computed for H(0, 0) and compared with available lattice data.