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Vortex solitons in Bose-Einstein condensates with spin-orbit coupling

Research Project

Project/Area Number 18K03462
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
Research InstitutionKyushu University

Principal Investigator

Sakaguchi Hidetsugu  九州大学, 総合理工学研究院, 准教授 (90192591)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsソリトン / ボース・アインシュタイン凝縮体 / スピン軌道相互作用 / ボース・アンシュタイン凝縮体 / 渦ソリトン / 負の質量 / ボース・アインシュタイン凝縮
Outline of Final Research Achievements

Bose-Einstein condensates can be well decribed by the Gross-Pitaevskii equation.We generalize the Gross-Pitaevskii (GP) equation by incorporating various effects and studied various nonlinear phenomena in the generalized GP equations. The soliton and vortex are typical nonlinear solutions to the GP equation. When two solitons with positive anf negative mass interact with each other, the negative mass soliton escapes from the positive mass soliton. When the magnitude of the mass is the same, the two solitons are accelerated infinitely. When the ultra cold gass has posituve and negative charge, the effect of the electric field needs to be considered. In a parameter range, the charge-density-wave state appears. In another parameter range, dipole or quadrupole type soliton appears.

Academic Significance and Societal Importance of the Research Achievements

ボース・アインシュタイン凝縮体のソリトン解に対しては様々な研究がなされているが。今回の研究で、正と負の質量の粒子が相互作用するという通常の力学では現れない興味深い状況が実現可能だと分かった。外力がない系にもかかわらず相互作用だけで互いに無限に加速されるという一見作用反作用の法則やエネルギ保存則に反するようにみえる現象が起こることを数値計算で示したことは物理学の基礎を見直すことにもつながる結果といえる。また、イオン状態の電荷をもったGP方程式の解析はこれまで行われておらず、非自明な非線形状態が現れることを示したのは学術的意義があると考えている。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (21 results)

All 2021 2020 2019 2018

All Journal Article (16 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 16 results,  Open Access: 1 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Symmetry breaking in a two-component system with repulsive interactions and linear coupling2021

    • Author(s)
      H.Sakaguchi and B.A.Malomed
    • Journal Title

      Communications in Nonlinear Science and Numerical Simulation

      Volume: 92 Pages: 105496-105496

    • DOI

      10.1016/j.cnsns.2020.105496

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Transmission Characteristics of Electons in Graphene incident on Cantor-like Potential2021

    • Author(s)
      T.Ogawana and H.Sakaguchi
    • Journal Title

      Jurnal of the Physical Society of Japan

      Volume: 90 Issue: 1 Pages: 014003-014003

    • DOI

      10.7566/jpsj.90.014002

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Slow decay of infection in the inhomogeneous susceptible-infected-recovered model2021

    • Author(s)
      H.Sakaguchi and Y.Nakao
    • Journal Title

      Physical Review E

      Volume: 103 Issue: 1 Pages: 012301-012301

    • DOI

      10.1103/physreve.103.012301

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Star-shaped patterns caused by colloidal aggregation during the spreading process of a droplet2020

    • Author(s)
      Michiko Shimokawa, H. Kitahata and Hidetsugu Sakaguchi
    • Journal Title

      EPL (Europhysics Letters)

      Volume: 132 Issue: 1 Pages: 18002-18002

    • DOI

      10.1209/0295-5075/132/18002

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Prediction Model for Approval Ratings of Governments2020

    • Author(s)
      H.Sakaguchi and Y.Hamasaki
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 12 Pages: 124801-124801

    • DOI

      10.7566/jpsj.89.124801

    • NAID

      40022438409

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Singular solitons2020

    • Author(s)
      Hidetsugu Sakaguchi and Boris A. Malomed
    • Journal Title

      Physical Review E

      Volume: 101 Issue: 1 Pages: 012211-012211

    • DOI

      10.1103/physreve.101.012211

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonlinear Management of Topological Solitons in a Spin-Orbit-Coupled System2019

    • Author(s)
      Hidetsugu Sakaguchi and Boris, A. Malomed
    • Journal Title

      Symmetry

      Volume: 11 Issue: 3 Pages: 388-388

    • DOI

      10.3390/sym11030388

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Solton lattices in the Gross-Pitaevskii equation with nonlocal and repulsive coupling2019

    • Author(s)
      Hidetsugu Sakaguchi
    • Journal Title

      Physics Letters A

      Volume: 383 Pages: 1132-1137

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Simple Model of Cell Proliferation of Bacteria Using Min Oscillation2019

    • Author(s)
      Hidetsugu Sakaguchi and Yuka Kawasaki
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 10 Pages: 104002-104002

    • DOI

      10.7566/jpsj.88.104002

    • NAID

      40022034096

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Flip motion of solitary wave in an Ising-type Vicsek model2019

    • Author(s)
      Hidetsugu Sakaguchi and Kazuya Ishibashi
    • Journal Title

      Physical Review E

      Volume: 100 Issue: 5 Pages: 052113-052113

    • DOI

      10.1103/physreve.100.052113

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Self-Organized Criticality of Domain Walls and Magnetization Curve2019

    • Author(s)
      Hidetsugu Sakaguchi and Yue Zhao
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 2 Pages: 024006-024006

    • DOI

      10.7566/jpsj.88.024006

    • NAID

      210000135090

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Interaction of solitons with positive and negative masses: Shuttle motion and coacceleration2019

    • Author(s)
      Hidetsugu Skaguchi and Boris A. Malomed
    • Journal Title

      Physical Review E

      Volume: 99 Issue: 2 Pages: 022216-022216

    • DOI

      10.1103/physreve.99.022216

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Stationary and oscillatory bound states of dissipative solitons created by third-order dispersion2018

    • Author(s)
      Hidetsugu Sakaguchi, Dmitry V. Skryabin, Boris A. Malomed
    • Journal Title

      Optics Letters

      Volume: 43 Issue: 11 Pages: 2688-2691

    • DOI

      10.1364/ol.43.002688

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] One- and Two-dimensinal Solitary Wave States in the Nonlinear Kramers Equation with Movement Direction asa Variable2018

    • Author(s)
      Hidetsugu Sakaguchi, Kazuya Ishibashi
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 6 Pages: 064001-064001

    • DOI

      10.7566/jpsj.87.064001

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mode selection on breakup of a droplet falling into a miscible solution2018

    • Author(s)
      Michiko Shimokawa and Hidetsugu Sakaguchi
    • Journal Title

      Physical Review Fluids

      Volume: 4 Issue: 1 Pages: 013603-013603

    • DOI

      10.1103/physrevfluids.4.013603

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] New models for multi-dimensional stable vortex solitons2018

    • Author(s)
      Hidetsugu Sakaguchi
    • Journal Title

      Frontiers of Physics

      Volume: 14 Issue: 1 Pages: 12301-12301

    • DOI

      10.1007/s11467-018-0857-0

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 正負の電荷をもつボース・アインシュタイン凝縮体のパターン形成2020

    • Author(s)
      坂口英継
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] スパイラルパターンのダイナミクス:コアの運動とその制御2019

    • Author(s)
      坂口英継
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] イジング型Vicsekモデルにおける孤立波の反転現象2019

    • Author(s)
      石橋和也 坂口英継
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 正と負の質量をもつ2つのソリトンの運動2019

    • Author(s)
      坂口英継
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] スピン軌道相互作用をもつボース・アインシュタイン凝縮体におけるギャップソリトン2018

    • Author(s)
      坂口英継 B.A. Malomed
    • Organizer
      日本物理学会2018秋季大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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