Bosonic quantum Hall states in single layer 2D optical lattices

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dc.contributor.author Bai, Rukmani
dc.contributor.author Bandyopadhyay, Soumik
dc.contributor.author Pal, Sukla
dc.contributor.author Suthar, K.
dc.contributor.author Angom, D.
dc.date.accessioned 2018-03-15T06:51:53Z
dc.date.available 2018-03-15T06:51:53Z
dc.date.issued 2018-02
dc.identifier.citation Bai, Rukmani; Bandyopadhyay, Soumik; Pal, Sukla; Suthar, K. and Angom, D., "Bosonic quantum Hall states in single layer 2D optical lattices", arXiv, Cornell University Library, DOI: arXiv:1802.07988, Feb. 2018. en_US
dc.identifier.uri http://arxiv.org/abs/1802.07988
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3532
dc.description.abstract Quantum Hall (QH) states of 2D single layer optical lattices are examined using Bose-Hubbard model (BHM) in presence of artificial gauge field. We study the QH states of both the homogeneous and inhomogeneous systems. For the homogeneous case we use cluster Gutzwiller mean field (CGMF) theory with cluster sizes ranging from 2×2 to 5×5. We, then, consider the inhomogeneous case, which is relevant to experimental realization. In this case, we use CGMF and exact diagonalization (ED). The ED studies are using lattice sizes ranging from 3×3 to 4×12. Our results show that the geometry of the QH states are sensitive to the magnetic flux α and cluster sizes. For homogeneous system, among various combinations of 1/5⩽α⩽1/2 and filling factor ν, only the QH state of α=1/4 with ν=1/2, 1, 3/2 and 2 occur as ground states. For other combinations, the competing superfluid (SF) state is the ground state and QH state is metastable. For BHM with envelope potential all the QH states observed in homogeneous system exist for box potentials, but none for the harmonic potential. The QH states also persist for very shallow Gaussian envelope potential. As a possible experimental signature we study the two point correlations of the QH and SF states.
dc.description.statementofresponsibility by Rukmani Bai, Soumik Bandyopadhyay, Sukla Pal, K. Suthar and D. Angom
dc.language.iso en en_US
dc.publisher Cornell University Library en_US
dc.title Bosonic quantum Hall states in single layer 2D optical lattices en_US
dc.type Preprint en_US


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