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arXiv · 2212.09238

The Monte Carlo simulation of the topological quantities in FQH systems

Yi Yang·Zi-Xiang Hu
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Abstract

Generally speaking, for a fractional quantum Hall (FQH) state, the electronic occupation number for each Landau orbit could be obtained from numerical methods such as exact diagonalization, density matrix renormalization group or algebraic recursive schemes (Jack polynomial). In this work, we apply a Metroplis Monte Carlo method to calculate the occupation numbers of several FQH states in cylinder geometry. The convergent occupation numbers for more than 40 particles are used to verify the chiral bosonic edge theory and determine the topological quantities via momentum polarization or dipole moment. The guiding center spin, central charge and topological spin of different topological sectors are consistent with theoretical values and other numerical studies. Especially, we obtain the topological spin of $e/4$ quasihole in Moore-Read and 331 states. At last, we calculate the electron edge Green's functions and analysis position dependence of the non-Fermi liquid behavior.

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Yi Yang, Zi-Xiang Hu. 2022-12-19. The Monte Carlo simulation of the topological quantities in FQH systems. https://doi.org/10.1103/physrevb.107.115162

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