Time-Dependent Density-Matrix Approach to Collective Excitations of a Quantum Dot

We study collective excitations of a quantum dot consisting of two electrons using a time-dependent density-matrix approach. The advantages of the density-matrix approach are that one- and two-body observables are directly calculated using one- and two-body density matrices and that it has a clear r...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2012-05, Vol.81 (5), p.1-1
Main Author: Tohyama, Mitsuru
Format: Article
Language:English
Subjects:
Deformation
Density
Electrons
Excitation
Mathematical analysis
Matrix
Quantum dots
Quantum physics
Qunatum dots
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Summary:We study collective excitations of a quantum dot consisting of two electrons using a time-dependent density-matrix approach. The advantages of the density-matrix approach are that one- and two-body observables are directly calculated using one- and two-body density matrices and that it has a clear relation to the time-dependent Hartree-Fock theory. Some low-lying spin modes associated with intrinsic transitions of a deformed configuration are predicted.
ISSN:0031-9015
1347-4073