Journal
JOURNAL OF MATHEMATICAL PHYSICS
Volume 57, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4941561
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Funding
- Deutsche Forschungsgemeinschaft (DFG) through Research Training Group 1838: Spectral Theory and Dynamics of Quantum Systems
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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.
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