Mpller scattering

From scattering theory it is known that the two-particle scattering states, p,p2)+, may be constructed with the Mpller operators from the two-particle noninteracting states p,p2) by the relation... 

Then from the many-channel scattering theory it is well known that the scattering states up + ) can be constructed with the Mpller operators fTf by... 

The Mpller operators of the last contribution, fl 123 4, describe scattering processes, in which particle 4 is asymptotically free. Thus, this last contribution vanishes. 

Lennard et al. (1988) studied L-shell ionization ratios for gold, where it was hoped that the Coulomb effect would be so reduced as to permit the observation of certain basic differences between positron-electron scattering (Bhabha, 1936) and electron-electron scattering (Mpller, 1932), for large energy transfers. Later Schneider, Tobehn and Hippier (1991, 1992), using the apparatus described above, measured the same quantities. As... 

Obviously, theory of vibrationally inelastic electron scattering is open to all complications that have been encountered in the theory of elastic electron scattering1,2,21. In contrast to the electronic structure theory, we do not have in the theory of electron scattering any standard procedures as configuration interaction, Mpller-Plesset theory or coupled clusters, not speaking about the... 

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