Quantum phases of dipolar bosons in one-dimensional optical lattices

Kraus R, Chanda T, Zakrzewski J, Morigi G (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review B American Physical Society

Book Volume: 106

Article Number: 035144

Journal Issue: 3

DOI: 10.1103/PhysRevB.106.035144

Abstract

We theoretically analyze the phase diagram of a quantum gas of bosons that interact via repulsive dipolar interactions. The bosons are tightly confined by an optical lattice in a quasi-one-dimensional geometry. In the single-band approximation, their dynamics is described by an extended Bose-Hubbard model where the relevant contributions of the dipolar interactions consist of density-density repulsion and correlated tunneling terms. We evaluate the phase diagram for unit density using numerical techniques based on the density-matrix renormalization group algorithm. Our results predict that correlated tunneling can significantly modify the parameter range of the topological insulator phase. At vanishing values of the onsite interactions, moreover, correlated tunneling promotes the onset of a phase with a large number of low-energy metastable configurations.

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1: Quantenkooperativität von Licht und Materie - QuCoLiMa

Related research project(s)

Spatio-temporal structures in interacting spin systems (D02) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Jagiellonian University / Uniwersytet Jagielloński (UJ) PL Poland (PL) Universität des Saarlandes (UdS) DE Germany (DE)

How to cite

APA:

Kraus, R., Chanda, T., Zakrzewski, J., & Morigi, G. (2022). Quantum phases of dipolar bosons in one-dimensional optical lattices. Physical Review B, 106(3). https://doi.org/10.1103/PhysRevB.106.035144

MLA:

Kraus, Rebecca, et al. "Quantum phases of dipolar bosons in one-dimensional optical lattices." Physical Review B 106.3 (2022).

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