2001, Volume 4, Number 4, pp.347-350
The variational-perturbation procedure of calculating
a first excited state of one-dimensional polaron
in weak coupling limit is proposed.
It is shown that the energy of this state lies
lower than the energy of scattering states and has
a quasi-intersection with the ground state energy
Key words: polaron, electron-phonon interaction, excited states,
quantum wires
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