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強相関ボーズならびにフェルミ原子集団の理論的研究

Research Project

Project/Area Number 04F04311
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field 原子・分子・量子エレクトロニクス・プラズマ
Research InstitutionOkayama University

Principal Investigator

町田 一成  岡山大学, 大学院・自然科学研究科, 教授

Co-Investigator(Kenkyū-buntansha) GHOSH T.K.  岡山大学, 大学院・自然科学研究科, 外国人特別研究員
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsフェルミ原子集団 / 音速 / フェッシュバッハ共鳴 / 流体力学 / 超流動 / フルデ・フェレル状態 / BCS
Research Abstract

最近^6Li等の中性フェルミ原子集団を光学的にトラップし,冷却し,更には超流動状態をつくることに世界のいくつかの実験グループが成功した.この系に磁場をかけるとフェッシバッハ共鳴現象を通して原始間相互作用を圧力から引力に変化させることが可能である。特に共鳴磁場では相互作用は無限大となり強相関系が実験的に実現した.これを念頭において今年度は共鳴点近傍の超流動状態の集団モード,特に音波について理論的に研究した.葉巻型にトラップされた原子雲をモデル化し,流体力学的な方程式を導き,解析的並びに数値的にそれを解いた.相互作用の強さの関数として音速を算出した.

Report

(2 results)
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (8 results)

All 2006 2005 2004

All Journal Article (8 results)

  • [Journal Article] Collective modes of a Fermi superfluid containing vortices along the BEC-BDS crossover2006

    • Author(s)
      T.K.Ghosh, K.Machida
    • Journal Title

      Phys.Rev.A 73

      Pages: 0256011-0256014

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Sound volocity and multi branch Bogoliubov spectrum of an elongated Fermi superfluid in the BEC-BCS crossover2006

    • Author(s)
      T.K.Ghosh, K.Machida
    • Journal Title

      Phys.Rev.A 73

      Pages: 0136131-0136136

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Vortex structure in spinor F=2 Bose-Einstein condensates2005

    • Author(s)
      W.V.Pogosov, R.Kawate et al.
    • Journal Title

      Phys.Rev.A 72

      Pages: 0636051-0636056

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Multibranch Bogoliubov-Block spectrum of a cigar-shaped Bosecondensate in an optical lattice2005

    • Author(s)
      T.K.Ghosh, K.Machida
    • Journal Title

      Phys.Rev.A 72

      Pages: 0536231-0536235

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Direct imaging of spatially modulated superfluid phases in atomic Fermion systems2005

    • Author(s)
      T.Mizushima, et al.
    • Journal Title

      Phys.Rev.Lett. 94

      Pages: 0604041-0604044

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Topological structure of a vortex in the Fulde-Ferrell-Larkin-Ovchnnikov state2005

    • Author(s)
      T.Mizushima, et al.
    • Journal Title

      Phys.Rev.Lett. 95

      Pages: 1170031-1170034

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Direct imaging of spatially modulated superfluid phases in atomic Fermion systems2005

    • Author(s)
      T.Mizushima
    • Journal Title

      Phys.Rev.Lett. 94

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Collective oscillations of Vortex lattices in Bose-Einstein condensates2004

    • Author(s)
      T.Mizushima
    • Journal Title

      Phys.Rev.Lett. 92

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2024-03-26  

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