Skip to main content

Matrix-Product-State Algorithm for Finite Fractional Quantum Hall Systems

Author(s): Liu, Z; Bhatt, Ravindra N

To refer to this page use:
Abstract: Exact diagonalization is a powerful tool to study fractional quantum Hall (FQH) systems. However, its capability is limited by the exponentially increasing computational cost. In order to overcome this difficulty, density-matrix-renormalization-group (DMRG) algorithms were developed for much larger system sizes. Very recently, it was realized that some model FQH states have exact matrix-product-state (MPS) representation. Motivated by this, here we report a MPS code, which is closely related to, but different from traditional DMRG language, for finite FQH systems on the cylinder geometry. By representing the many-body Hamiltonian as a matrix-product-operator (MPO) and using single-site update and density matrix correction, we show that our code can efficiently search the ground state of various FQH systems. We also compare the performance of our code with traditional DMRG. The possible generalization of our code to infinite FQH systems and other physical systems is also discussed.
Publication Date: 2015
Electronic Publication Date: 2015
Citation: Liu, Z, Bhatt, RN. (2015). Matrix-Product-State Algorithm for Finite Fractional Quantum Hall Systems. Journal of Physics: Conference Series, 640 (10.1088/1742-6596/640/1/012044
DOI: doi:10.1088/1742-6596/640/1/012044
Type of Material: Conference Article
Journal/Proceeding Title: Journal of Physics: Conference Series
Version: Author's manuscript

Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.