Torus geometry eigenfunctions of an interacting multi-Landau-level Hamiltonian
Torus geometry eigenfunctions of an interacting multi-Landau-level Hamiltonian
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相互作用的多朗道级哈密顿量的环面几何本征函数
DOI:
10.1103/physrevb.107.195126
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发表时间:
2023
影响因子:
3.7
通讯作者:
Anand A
中科院分区:
文献类型:
--
作者:
Anand A
A short-ranged, rotationally symmetric multi-Landau-level model Hamiltonian for strongly interacting electrons in a magnetic field was proposed [A. Anandet al., Phys. Rev. Lett. 126, 136601 (2021)0031-900710.1103/PhysRevLett.126.136601] with the key feature that it allows exact many-body eigenfunctions on the disk not just for quasiholes but for all charged and neutral excitations of the entire Jain sequence filling fractions. We extend this to geometries without full rotational symmetry, namely, the torus and cylinder geometries, and present their spectra. Exact diagonalization of the interaction on the torus produces the low-energy spectra at filling fractionthat is identical, up to a topological ()-fold multiplicity, to that of the integer quantum Hall spectra at, for the incompressible state as well as all excitations. While the ansatz eigenfunctions in the disk geometry cannot be generalized to closed geometries such as torus or sphere, we show how to extend them to cylinder geometry. Meanwhile, we show eigenfunctions for charged excitations at filling fractions betweenandcan be written on the torus and the spherical geometries.
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DOI:
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