Self-adjointness and domain of the Frohlich Hamiltonian
Self-adjointness and domain of the Frohlich Hamiltonian
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DOI:
10.1063/1.4941561
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发表时间:
2016-02-01
影响因子:
1.3
通讯作者:
Wuensch, A.
中科院分区:
文献类型:
--
作者:
Griesemer, M.;Wuensch, A.
In the large polaron model of Herbert Frohlich, the electron-phonon interaction is a small perturbation in form sense, but a large perturbation in operator sense. This means that the form-domain of the Hamiltonian is not affected by the interaction but the domain of self-adjointness is. In the particular case of the Frohlich model, we are nevertheless able, thanks to a recently published new operator bound, to give an explicit characterization of the domain in terms of a suitable dressing transform. Using the mapping properties of this dressing transform, we analyse the smoothness of vectors in the domain of the Hamiltonian with respect to the position of the electron. (C) 2016 AIP Publishing LLC.