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Title: | Nonclassical states in strongly correlated bosonic ring ladders | Authors: | Victorin, Nicolas Haug, Tobias Kwek, Leong-Chuan Amico, Luigi Minguzzi, Anna |
Keywords: | Bose Gases Bose-Einstein Condensates DRNTU::Science::Physics |
Issue Date: | 2019 | Source: | Victorin, N., Haug, T., Kwek, L.-C., Amico, L., & Minguzzi, A. (2019). Nonclassical states in strongly correlated bosonic ring ladders. Physical Review A, 99(3), 033616-. doi:10.1103/PhysRevA.99.033616 | Series/Report no.: | Physical Review A | Abstract: | We study the ground state of a bosonic ring ladder under a gauge flux in the vortex phase, corresponding to the case where the single-particle dispersion relation has two degenerate minima. By combining exact diagonalization and an approximate fermionization approach we show that the ground state of the system evolves from a fragmented state of two single-particle states at weak interparticle interactions to a fragmented state of two Fermi seas at large interactions. Fragmentation is inferred from the study of the eigenvalues of the reduced single-particle density matrix as well as from the calculation of the fidelity of the states. We characterize these nonclassical states by the momentum distribution, the chiral currents, and the current-current correlations. | URI: | https://hdl.handle.net/10356/96041 http://hdl.handle.net/10220/48578 |
ISSN: | 2469-9926 | DOI: | 10.1103/PhysRevA.99.033616 | Schools: | National Institute of Education | Organisations: | MajuLab, CNRS-UNS-NUS-NTU International Joint Research Unit | Research Centres: | Institute of Advanced Studies | Rights: | © 2019 American Physical Society. All rights reserved. This paper was published in Physical Review A and is made available with permission of American Physical Society. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | IAS Journal Articles |
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