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题名: Effective mass of composite fermions and fermionic Chern-Simons theory in the temporal gauge
作者: Yu, Y ;  Su, ZB ;  Dai, X
刊名: PHYSICAL REVIEW B
出版日期: 1998
卷号: 57, 期号:16, 页码:9897-9906
关键词: FILLED LANDAU-LEVEL ;  LOW-ENERGY PROPERTIES ;  QUANTUM HALL STATES ;  RESPONSE FUNCTIONS ;  VORTEX DYNAMICS ;  LIQUID ;  SYSTEMS ;  FIELD ;  SUPERCONDUCTORS ;  EXCITATIONS
学科分类: Physics
通讯作者: Yu, Y , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The definitions of the effective mass for the composite fermion are discussed in half filled lowest-Landau-level systems. In a recent work, Shankar and Murthy show a finite effective mass for the composite fermion using a canonical transformation, while the perturbative calculation gives the logarithmic divergent one at the Fermi surface. We emphasize that the definition of the effective mass depends on how strong the low-frequency Chern-Simons fluctuations are in the physical process. We work with the standard Halperin-Lee-Read model in the temporal gauge. The advantage of this gauge is that the finite effective mass may be calculated in the Hartree-Fock approximation. Furthermore, it is precisely equal to the result obtained by Shankar and Murthy, which fits very well the numerical calculation from the ground-state energy analysis as well as the semiclassical estimation. However, if we consider further the random-phase approximation, we find that the divergence of the effective mass at the Fermi surface emerges again whether we work. with the temporal or Coulomb gauge. On the other hand, the behavior of the response functions in the small band mass limit is discussed systematically in the lowest-order calculation if there exists a self-interaction among the magnetoplasmons. [S0163-1829(98)00516-5].
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000073209000071
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12322
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Yu, Y,Su, ZB,Dai, X. Effective mass of composite fermions and fermionic Chern-Simons theory in the temporal gauge[J]. PHYSICAL REVIEW B,1998,57(16):9897-9906.
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