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|Title:||Nonclassical states in strongly correlated bosonic ring ladders||Authors:||Victorin, Nicolas
|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
|ISSN:||2469-9926||DOI:||http://dx.doi.org/10.1103/PhysRevA.99.033616||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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