The Spectrum of the Spin-Boson Model
Many physical problems can be described as a single (or a few) degrees of freedom interacting with a free field, regarded as a bath or reservoir. It is commonly assumed that a nontrivial coupling to the field serves as a mechanism for the small system to dissipate its energy. This somewhat vague formulation should be made precise by mathematical physics and we take here the point of view that it is reflected in the spectrum of the coupled Hamiltonian.
KeywordsSelfadjoint Operator Virial Theorem Conjugate Operator Selfadjoint Extension Spectral Subspace
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- 9.M. Hübner and H. Spohn, to be published.Google Scholar