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

被引：7
|
作者：
Tohyama, Mitsuru [1 ]
机构：
[1] Kyorin Univ, Sch Med, Mitaka, Tokyo 1818611, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2012年 / 81卷 / 05期
关键词：
quantum dots; collective excitations; mean field theories; Fermion systems; DEFORMED-NUCLEI; FORMALISM;
D O I：
10.1143/JPSJ.81.054707
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：6
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