Quantum vs classical aspects of one dimensional electron-phonon systems revisited by the renormalization group method

被引：24

作者：

Bakrim, H. ^{[1
]}

Bourbonnais, C. ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Phys, Regroupement Quebecois Mat Pointe, Sherbrooke, PQ J1K 2R1, Canada

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.76.195115

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An extension of the renormalization group method that includes the effect of retardation for the interactions of a fermion gas is used to reexamine the quantum and classical properties of Peierls-type states in one dimension. For models of spinless and spin-1/2 fermions interacting with either intra- or intermolecular phonons, the quantum corrections to the Peierls gap at half-filling are determined at arbitrary phonon frequency. The nature of quantum-classical transitions is clarified in weak coupling.

引用

页数：13

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