Many-body effects between unbosonized excitons

被引：26

作者：

Combescot, A ^{[1
]}

Betbeder-Matibet, O ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, F-75015 Paris, France

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 134卷 / 1-2期

关键词：

composite excitons; excitons and related phenomena;

D O I：

10.1016/j.ssc.2004.07.075

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We here, give a brief survey of our new many-body theory for composite excitons, as well as some of the results we have already obtained using it. In view of them, we conclude that, in order to fully trust the results one finds, interacting excitons should not be bosonized: indeed, all effective bosonic Hamiltonians (even the hermitian ones!) can miss terms as large as the ones they generate; they can even miss the dominant term, as in problems dealing with optical nonlinearities. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：11 / 17

页数：7

共 27 条

[1]

Abrikosov AA., 1975, Methods of Quantum Field Theory in Statistical Physics

[2] Density expansion of the energy of N close-to-boson excitons [J].