  The regularized stress-energy tensor of the quantized massive scalar, spinor
and vector fields inside the degenerate horizon of the regular charged black
hole in the (anti-)de Sitter universe is constructed and examined. It is shown
that although the components of the stress-energy tensor are small in the
vicinity of the black hole degenerate horizon and near the regular center, they
are quite big in the intermediate region. The oscillatory character of the
stress-energy tensor can be ascribed to various responses of the higher
curvature terms to the changes of the metric inside the (degenerate) event
horizon, especially in the region adjacent to the region described by the
nearly flat metric potentials. Special emphasis is put on the stress-energy
tensor in the geometries being the product of the constant curvature
two-dimensional subspaces.
