We calculate polarization phenomena for virtual Compton scattering on
protons, at relatively large momentum transfer 1 GeV2≤−q2≤ 5
GeV2 on the basis of a model for γ∗+p→γ+p with two main
contributions: π0-exchange in t−channel and Δ-excitation in
s-channel. This model applies from threshold to Δ region. The
parameters entering in this model, such as coupling constants and
electromagnetic form factors are well known. The analyzing powers for
γ∗+p​→γ+p and the components of the final proton
polarization in γ∗+p→γ+p​ are large in absolute value and
show strong sensitivity to π⨂Δ interference. These results
can be applied to the calculation of radiative corrections to polarization
phenomena in elastic ep-scattering.Comment: 18 pages, 9 figure