Analysis of Shape Change of Droplet in Dipolar Bose–Hubbard Model

Kazuhiro Tamura; Shohei Watabe; Tetsuro Nikuni

doi:10.1007/s10909-022-02765-1

Analysis of Shape Change of Droplet in Dipolar Bose–Hubbard Model

Kazuhiro Tamura, Shohei Watabe, Tetsuro Nikuni

Department of Computer Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The long-range and anisotropic nature of the dipolar interaction provides the so-called supersolid phases in Bose-Einstein condensates (BECs) in an optical lattice. However, in a certain area of dipole interaction parameters, BECs can form into a droplet. In this paper, in order to qualitatively understand the droplet formations, we propose a toy model that allows us to estimate the size and shape of droplets in dipolar Bose–Hubbard system in the optical lattice. We compare results of the toy model with numerical solutions of the mean-field calculation.

Original language	English
Pages (from-to)	365-371
Number of pages	7
Journal	Journal of Low Temperature Physics
Volume	208
Issue number	5-6
DOIs	https://doi.org/10.1007/s10909-022-02765-1
Publication status	Published - 2022 Sep

Keywords

Bose–Hubbard model
Dipolar interaction
Droplet
Superfluid
Supersolid

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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10.1007/s10909-022-02765-1

Cite this

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title = "Analysis of Shape Change of Droplet in Dipolar Bose–Hubbard Model",

abstract = "The long-range and anisotropic nature of the dipolar interaction provides the so-called supersolid phases in Bose-Einstein condensates (BECs) in an optical lattice. However, in a certain area of dipole interaction parameters, BECs can form into a droplet. In this paper, in order to qualitatively understand the droplet formations, we propose a toy model that allows us to estimate the size and shape of droplets in dipolar Bose–Hubbard system in the optical lattice. We compare results of the toy model with numerical solutions of the mean-field calculation.",

keywords = "Bose–Hubbard model, Dipolar interaction, Droplet, Superfluid, Supersolid",

author = "Kazuhiro Tamura and Shohei Watabe and Tetsuro Nikuni",

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AU - Tamura, Kazuhiro

AU - Watabe, Shohei

AU - Nikuni, Tetsuro

N1 - Funding Information: This work is supported by JSPS KAKENHI Grants No. JP18K03499. Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

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N2 - The long-range and anisotropic nature of the dipolar interaction provides the so-called supersolid phases in Bose-Einstein condensates (BECs) in an optical lattice. However, in a certain area of dipole interaction parameters, BECs can form into a droplet. In this paper, in order to qualitatively understand the droplet formations, we propose a toy model that allows us to estimate the size and shape of droplets in dipolar Bose–Hubbard system in the optical lattice. We compare results of the toy model with numerical solutions of the mean-field calculation.

AB - The long-range and anisotropic nature of the dipolar interaction provides the so-called supersolid phases in Bose-Einstein condensates (BECs) in an optical lattice. However, in a certain area of dipole interaction parameters, BECs can form into a droplet. In this paper, in order to qualitatively understand the droplet formations, we propose a toy model that allows us to estimate the size and shape of droplets in dipolar Bose–Hubbard system in the optical lattice. We compare results of the toy model with numerical solutions of the mean-field calculation.

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KW - Superfluid

KW - Supersolid

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Analysis of Shape Change of Droplet in Dipolar Bose–Hubbard Model

Abstract

Keywords

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