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cond-mat.supr-con2006
Variational band theory of vibronic polarons in crystals. III. Numerical calculations
M. Georgiev, A. G. Andreev, M. D. Ivanovich
In the preceding Part II, we derived variational equations for the phonon Fourier amplitudes and for the Fourier amplitudes of the fractional contribution of the electronic bands t…
cond-mat.supr-con2005
Itinerant vibronic polarons: A Merrifield approach I. Low energy range calculations
S. G. Tsintsarska, M. D. Ivanovich, A. Andreev +3
We extend Merrifield's Variational Ansatz in the variational band theory of polarons to cover a frame of two electronic bands mixed by an Einstein phonon. The Hamiltonian is compos…