WebApr 12, 2000 · An effective Frenkel-exciton Hamiltonian for the LH2 photosynthetic complex from Rhodospirillum molischianum is calculated using the collective electronic oscillator (CEO) approach combined with the crystal structure. The absorption spectra of the various bacteriochlorophyll aggregates forming the complex are computed using the … WebThe specific feature of the exciton-phonon interaction is the importance of both electrons and holes coupled by Coulomb interaction. The main interest here is to review the role that acoustic phonons play in exciton dynamics. In GaAs/AlGaAs quantum wells the excitons are strongly pronounced in the optical spectra as narrow spectral lines, which ...
Dynamics of Molecular Excitons ScienceDirect
WebThese ab initio-derived quantities are then used to construct a BCS-like Hamiltonian of the exciton condensate. By solving the mean-field gap equation, we identify 16 vdW Janus bilayers with insulating ground states and superfluid properties. Our calculations expose a new class of advanced materials that are likely to exhibit novel excitonic ... huntington bank money market promo
Davydov soliton - Wikipedia
WebFeb 15, 2024 · The excitonic Hamiltonian of each dimer is parameterized by the QD size and interdot distance, using an effective mass approximation. ... Hugo, Barbara Fresch, Raphael D. Levine, and Françoise Remacle. 2024. "Coherent Exciton Dynamics in Ensembles of Size-Dispersed CdSe Quantum Dot Dimers Probed via Ultrafast … WebIn the multiple-exciton sector, HC is a Hamiltonian that couples two nonlinear harmonic oscillators, where the nonlinearity arises from excitonic interactions; HC also contains these oscillators’ interactions with their cooperative environments. The two essential features of the decomposition into cooperative and normal sections are as follows. WebApr 11, 2024 · A vector system-bath representation is introduced, which brings the exciton-vibration Hamiltonian in system-bath form. In this, the system vectors specify the locations of the potential minima, which in the case of identical monomers lie on the vertices of a regular polyhedron. By properly choosing the system vectors, it is possible to couple ... marwan\\u0027s port perry