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Effective mass of composite fermions and fermionic Chern-Simons theory in the temporal gauge
Yu, Y; Su, ZB; Dai, X; Yu, Y , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
1998
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号57期号:16页码:9897-9906
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].
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Filled Landau-level Low-energy Properties Quantum Hall States Response Functions Vortex Dynamics Liquid Systems Field Superconductors Excitations
学科领域Physics
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收录类别SCI
WOS记录号WOS:000073209000071
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12322
专题理论物理所SCI论文
通讯作者Yu, Y , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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Yu, Y,Su, ZB,Dai, X,et al. Effective mass of composite fermions and fermionic Chern-Simons theory in the temporal gauge[J]. PHYSICAL REVIEW B,1998,57(16):9897-9906.
APA Yu, Y,Su, ZB,Dai, X,&Yu, Y , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(1998).Effective mass of composite fermions and fermionic Chern-Simons theory in the temporal gauge.PHYSICAL REVIEW B,57(16),9897-9906.
MLA Yu, Y,et al."Effective mass of composite fermions and fermionic Chern-Simons theory in the temporal gauge".PHYSICAL REVIEW B 57.16(1998):9897-9906.
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