Spin-boson Hamiltonian and optical absorption of molecular dimers

Christiane Koch and Bernd Esser
Phys. Rev. A 61, 022508 – Published 13 January 2000
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Abstract

An analysis of the eigenstates of a symmetry-broken spin-boson Hamiltonian is performed by computing Bloch and Husimi projections. The eigenstate analysis is combined with the calculation of absorption bands of asymmetric dimer configurations constituted by monomers with nonidentical excitation energies and optical transition matrix elements. Absorption bands with regular and irregular fine structures are obtained and related to the transition from the coexistence to a mixing of adiabatic branches in the spectrum. It is shown that correlations between spin states allow for an interpolation between absorption bands for different optical asymmetries.

  • Received 11 June 1999

DOI:https://doi.org/10.1103/PhysRevA.61.022508

©2000 American Physical Society

Authors & Affiliations

Christiane Koch* and Bernd Esser

  • Institut für Physik, Humboldt-Universität zu Berlin, Invalidenstraße 110, D-10115 Berlin, Germany

  • *Present address: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Abteilung Chemische Physik, Faradayweg 4-6, 14195 Berlin, Germany.
  • Author to whom correspondence should be addressed. FAX: 49 30 2093 7638. Electronic address: bernd.esser@physik.hu-berlin.de

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Issue

Vol. 61, Iss. 2 — February 2000

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