A non-perturbative approach to the bound polaron. II
S Mukhopadhyay; T K Mitra; S Mukhopadhyay; Dept. of Theoretical Phys., Indian Assoc. for the Cultivation of Sci., Calcutta, India; T K Mitra; Dept. of Theoretical Phys., Indian Assoc. for the Cultivation of Sci., Calcutta, India
Журнал:
Journal of Physics C: Solid State Physics
Дата:
1980-06-20
Аннотация:
For pt.I see Phys. Lett. A, vol.71, p.385 (1979). A recently developed non-perturbative iterative variational method has been applied to the bound polaron problem. The electron-phonon Hamiltonian is reduced in successive orders resulting in a transformed electronic Hamiltonian which gets an attractive phonon-induced potential from each order of reduction. The transformed electronic Hamiltonian has been solved numerically for a series of values of the parameters alpha , beta . Relation to perturbative solutions is discussed. Interesting localisation criteria derived from the calculated wavefunctions are also discussed.
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