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Study of quasi-conserved quantities in atomic BEC and dilute quantum gases

Research Project

Project/Area Number 15540381
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 原子・分子・量子エレクトロニクス・プラズマ
Research InstitutionThe University of Electro- Communications

Principal Investigator

WATANABE Shinichi  The University of Electro-Communications, Faculty of Electro- Communications, Professor, 電気通信学部, 教授 (60210902)

Co-Investigator(Kenkyū-buntansha) OHTSUKI Kazumasa  The University of Electro-Communications, Faculty of Electro- Communications, Assistant Professor, 電気通信学部, 助手 (80221828)
MORISHITA Toru  The University of Electro-Communications, Faculty of Electro- Communications, Assistant Professor (20313405)
Project Period (FY) 2003 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2005: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2004: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2003: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsBEC / Atto second laser and atoms dilute gas / Low temperature ion mobility in a dilute gas / BEC輸送問題 / 分子イオンの回転励起状態 / 量子論的運動量移行断面積 / BEC干渉効果 / アト秒光原子課程 / 低温分子イオン / 移動度 / 超球座標法 / イオン移動度 / 時間発展シミュレーション / 断熱近似
Research Abstract

We studied adiabaticity and nonlinear dynamics in the context of the manipulation and control of the Bose-Einstein condensate (BEC) made of an atomic gas. We conducted a pilot study of the mechanism for the unanticipated creation of quantum vorticies in an experiment pertaining to the construction of a beam-splitter in a BEC-interferometer. Since the numerical techniques and the computer codes required for the analysis of BEC have much in common with those for the ultra-short laser pulses and their application to atomic physics, we observed a new development by applying the techniques to the ionization of atoms in ultra-intense laser fields and to the high-harmonics generation.
With a view to the representation of two-body interactions, we employed a computation scheme based on theoretical chemistry, and evaluated the mobility of an ion in a low-temperature gas of helium, thereby carrying out a dynamical analysis of the mobility and comparing it with experimental results. Quite unexpectedly, we pinned down the cause of the hitherto unsolved polarization-limit problem.
In addition to such discoveries, there emerged new challenges. For instance, the transformation of an atomic pair into a molecule at ultra-low temperatures constitutes a nonlinear STIRAP problem, which is an important issue under the present theme and is all the more applicable to related problems because of the universal mathematical nature of the nonlinear STIRAP problem. We expect more challenges will appear in relation to the adiabaticity and nonlinear dynamics in many-body physics at low temperatures. A new experimental development is equally likely in the field of ultra-short laser pulses and their interactions with atoms. We look forward to contributing to further progress.

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (55 results)

All 2007 2006 2005 2004 2003 Other

All Journal Article (41 results) Publications (14 results)

  • [Journal Article] Attosecond Light Pulses for Probing Two-Electron Dynamics of Helium in the Time Domain2007

    • Author(s)
      Toru Morishita, Shinichi Watanabe, C. D. Lin
    • Journal Title

      Physical Review Letters 98

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Time-dependent hyperspherical studies for a two-dimensional attractive Bose-Einstein condensate2007

    • Author(s)
      Chien-Nan Liu, Toru Morishita, Shinichi Watanabe
    • Journal Title

      Physical Review A 75

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Two-dimensional electron momentum spectra of argon ionized by short intense lasers : Comparison of theory with experiment2007

    • Author(s)
      Toru Morishita, Zhangjin Chen, Shinichi Watanabe, C. D. Lin
    • Journal Title

      Physical Review A 75

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2007

    • Author(s)
      Toru Morishita Shinichi Watanabe, C.D.Lin
    • Journal Title

      Phys.Rev.Lett 98, 083003

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2007

    • Author(s)
      Chien-Nan LiuToru Morishita, Shinichi Watanabe
    • Journal Title

      Phys.Rev A 75, 023604

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2007

    • Author(s)
      Toru Morishita, Zhangjin Chen, Shinichi Watanabe, C.D.Lin
    • Journal Title

      Phys.Rev.A 75, 023407

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Attosecond Light Pulses for Probing Two-Electron Dynamics of Helium in the Time Domain2007

    • Author(s)
      Toru Morishita, Shinichi Watanabe, C.D.Lin
    • Journal Title

      Physical Review Letters 98

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Two-dimensional electron momentum spectra of argon ionized by short intense lasers : Comparison of theory with experiment2007

    • Author(s)
      Toru Morishita, Zhangjin Chen, Shinichi Watanabe, C.D.Lin
    • Journal Title

      Physical Review A 75

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Analysis of two-dimensional photoelectron momentum spectra and the effect of the long-range Coulomb potential in single ionization of atoms by intense lasers2006

    • Author(s)
      Z.Chen, T.Morishita, A.-T.Le, M.Wickenhauser, X.M.Tong, C.D.Lin
    • Journal Title

      Physical Review A 74

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Reexamination of dynamical stabilization of matter-wave solitons2006

    • Author(s)
      Alexander Itin, Toru Morishita, Shinichi Watanabe
    • Journal Title

      Physical Review A 74

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Vortex creation during magnetic trap manipulations of spinor Bose-Einstein condensates2006

    • Author(s)
      A.P.Itin, T.Morishita, M.Satoh, O.I.Tolstikhin, S.Watanabe
    • Journal Title

      Physical Review A 73

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Direct Experimental Visualization of Atomic and Electron Dynamics with Attosecond Pulses2006

    • Author(s)
      C.D.Lin, X.M.Tong, T.Morishita
    • Journal Title

      Journal of Physics B 39

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2006

    • Author(s)
      Z.Chen, T.Morishita, A.-T.Le, M.Wickenhauser, X.M.Tong, C.D.Lin
    • Journal Title

      Phys.Rev.A 74, 053405

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2006

    • Author(s)
      Alexander Itin, Toru Morishita, Shinichi Watanabe
    • Journal Title

      Phys.Rev.A 74,033613

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2006

    • Author(s)
      A.P.Itin, T.Morishita, M.Satoh, O.I.Tolstikhin, S.Watanabe
    • Journal Title

      Phys.Rev.A 73, 063615

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2006

    • Author(s)
      C.D.Lin, X.M.Tong, T.Morishita
    • Journal Title

      J.Phys.B 39

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Analysis of two-dimensional photoelectron momentum spectra and the effect of the long-range Coulomb potential in single ionization of atoms by intense lasers2006

    • Author(s)
      Z.Chen, T.Morishita, A.-T.Le, M.Wichenhauser, X.M.Tong, C.D.Lin
    • Journal Title

      Physical Review A 74

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Direct Expermental Visualization of Atomic and Electron Dynamics with Attosecond Pulses2006

    • Author(s)
      C.D.Lin, X.M.Tong, T.Morishita
    • Journal Title

      Journal of Physics B 39

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Signature of chaos in high-lying doubly excited states of the helium atom2005

    • Author(s)
      A.-T.Le, T.Morishita, X.-M.Tong, C.D.Lin
    • Journal Title

      Physical Review A 72

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Gyroscopic effects in interference of matter waves2005

    • Author(s)
      Oleg I.Tolstikhin, Toru Morishita, Shinichi Watanabe
    • Journal Title

      Physical Review A 72

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Hyperspherical analysis of radial correlations in four-electron atoms2005

    • Author(s)
      Toru Morishita, C. D. Lin
    • Journal Title

      Physical Review A 71

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Anomalous Decline of Molecular Ion Mobility in Cooled Helium Gas2005

    • Author(s)
      K.Ohtsuki, M.Hananoe, M.Matsuzawa
    • Journal Title

      Physical Review Letters 95

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Investigation of triply excited states of Li-like ions in fast ion-atom collisions by zero-degree Auger projectile electron spectroscopy2005

    • Author(s)
      T.J.M.Zouros, E.P.Benis, M.Zamkov, C.D.Lin, T.G.Lee, P.Richard, T.W.Gorczyca, T.Morishita
    • Journal Title

      Nucl. Instrum. Methods B 233

      Pages: 161-171

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2005

    • Author(s)
      A.-T.Le, T.Morishita, X.-M.Tong, C.D.Lin
    • Journal Title

      Phys.Rev.A 72, 032511

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2005

    • Author(s)
      Oleg I.Tolstikhin, Toru Morishita, Shinichi Watanabe
    • Journal Title

      Phys.Rev.A 72, 051603

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2005

    • Author(s)
      Toru Morishita, C.D.Lin
    • Journal Title

      Phys.Rev.A 71, 012504

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2005

    • Author(s)
      K.Ohtsuki, M.Hananoe, M.Matsuzawa
    • Journal Title

      Phys.Rev.Lett. 95 213201

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2005

    • Author(s)
      T.J.M.Zouros, E.P.Benis, M.Zamkov, C.D.Lin, T.G Lee, P.Richard, T.W.Gorczyca, T.Morishita
    • Journal Title

      Nucl.Instrum.Methods B 233

      Pages: 161-171

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Siegert pseudostate perturbation theory : One- and two-threshold cases2005

    • Author(s)
      Koudai Toyota, Toru Morishita, Shinichi Watanabe
    • Journal Title

      Physical Review A 72

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Anomalous Decline of Molecular Ion Mobility in Cooled Helium Gas2005

    • Author(s)
      Kazumasa Ohtsuki, Masatoshi Hananoe, Michio Matsuzawa
    • Journal Title

      Physical Review Letters 95

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Hyperspherical analysis of radial correlations in four-electron atoms2005

    • Author(s)
      Toru Morishita, C.D.Lin
    • Journal Title

      Physical Review A 71

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Investigation of triply excited states of Li-like ions in fast ion-atom collisions by zero-degree Auger projectile electron spectroscopy2005

    • Author(s)
      T.J.M.Zouros, E.P.Benis, M.Zamkov, C.D.Lin, T.G.Lee, P.Richard, T.W.Gorczyca, Toru Morishita
    • Journal Title

      Nucl.Inst.Method B 233

      Pages: 161-171

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Signature of chaos in high-lying doubly excited states of the helium atom2005

    • Author(s)
      A.-T.Le, Toru Morishita, X.-M.Tong, C.D.Lin
    • Journal Title

      Physical Review A 72

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Hyperspherical analysis of radial correlations in four-electron atoms(査続有り)2005

    • Author(s)
      T.Morishita, C.D.Lin
    • Journal Title

      Physical Review A 71

      Pages: 12504-12504

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Collective excitation mode in the rotating asymmetric BEC of ^<87>Rb(査続無し)2005

    • Author(s)
      M.Matono, T.Morishita, S.Watanabe
    • Journal Title

      International Seminar on Atomic Processes in Intense Laser Fields and Related Many-Body Phenomena (Book of Abstracts)

      Pages: 62-62

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Aspects of hyperspherical adiabaticity in an atomic-gas Bose-Einstein condensate2004

    • Author(s)
      Daisuke Kushibe, Masaki Mutou, Toru Morishita, Shinichi Watanabe, Michio Matsuzawa
    • Journal Title

      Physical Review A 70

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(欧文)」より2004

    • Author(s)
      Daisuke Kushibe, Masaki Mutou, Toru Morishita, Shinichi Watanabe, Michio Matsuzawa
    • Journal Title

      Phys.Rev.A 70, 063617

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Aspects of hyperspherical adiabaticity in an atomic-gas Bose-Einstein condensate(査続有り)2004

    • Author(s)
      D.Kushibe, M.Mutou, T.Morishita, S.Watanabe, M.Matsuzawa
    • Journal Title

      Physical Review A 70

      Pages: 63617-63617

    • Related Report
      2004 Annual Research Report
  • [Journal Article] THEORETICAL STUDY for DECLINE IN MOLECULAR ION MOBILTY(査続無し)2004

    • Author(s)
      K.Ohtsuki, M.Hananoe, M.Matsuzawa
    • Journal Title

      6th Asian International Seminar on Atomic & Molecular Physics Seminar Abstracts

      Pages: 43-43

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Pump-probe analysis of doubly excited states of He atom(査続無し)2004

    • Author(s)
      T.Morishita, S.Watanabe, C.D.Lin
    • Journal Title

      International Seminar on Atomic Processes in Intense Laser Fields and Related Many-Body Phenomena (Book of Abstracts)

      Pages: 24-24

    • Related Report
      2004 Annual Research Report
  • [Journal Article] MOBILITY OF DIATOMIC MOLECULAR IONS IN HELIUM GAS AT LOW TEMPERATURE(査続無し)2003

    • Author(s)
      M.Hananoe, K.Ohthuki, M.Matsuzawa
    • Journal Title

      Atomic Collision Research in Japan 29

      Pages: 13-13

    • Related Report
      2004 Annual Research Report
  • [Publications] Koudai Toyota, Shinichi Watanabe: "Two-channel Siegert pseudostate approach to a three-body Coulomb problem : S-wave resonances of Ps-(N=2,3)"Phys.Rev.A. 68. 062504 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Zamkov,.E.P.Benis, C.D.Lin, T.G.Lee, T.Morishita, P.Richard, T.J.M Zouros: "Experimental observation and theoretical calculations of triply excited 2s2p^2 ^2S^e,^<2,4>P^e,^2D^e,2p^3 ^2P^0,^2D^0 states of fluorine"Phys.Rev.A. 67. 050703 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, T.Sasajima, S.Watanabe, M.Matsuzawa: "Double ionization of He by fast proton and antiproton impact"Nucl.Last.Method B. 214. 144 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, C.D.Lin: "Hyperspherical Analysis of Multiply Excited States of Atoms"Correlation and polarization in photonic, electronic, and atomic collisions (AIP Conference Proceedings). 697. 165 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] C.-N.Liu, A.-T.Le, T.Morishita, B.D.Esry, C.D.Lin: "Hyperspherical Close Coupling Calculations for Charge Transfer Cross Sections in He^<2+>+H(1s) Collisions at Low Energies"23 rd International conference of the Photonic, Electronic and Atomic Collisions, Program with abstracts. We152 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, C.D.Lin: "HYPERSPHERICAL METHOD FOR FOUR-ELECTRON ATOMIC SYSTEMS"23 rd International conference of the Photonic, Electronic and Atomic Collisions, Program with abstracts. We207 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, C.D.Lin: "Radial and Angular Correlations and the Classifications of intershell triply excited states"23 rd International conference of the Photonic, Electronic and Atomic Collisions, Program with abstracts. We214 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, T.Sasajima, S.Watanabe, M.Matsuzawa: "DOUBLE IONIZATION OF HE BY FAST PROTON AND ANTIPROT ON IMPACT USING HYPERSPHERICAL L^2-INTEGRABLE BASIS METHOD"23 rd International conference of the Photonic, Electronic and Atomic Collisions, Program with abstracts. Tu089 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, C.DLin: "Hyperspherical approach to four-electron atomic systems"35 th Conference of the European Group for Atomic Spectroscopy, Abstracs (European conference abstracts). 27B. 123 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Sasajima, T.Morishita, S.Watanabe, M.Matsuzawa: "HSL2 method for double ionization of He by fast proton and antiproton impact"Atomic Collision Research in Japan. 29. 34 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Ishimura, D.Kushibe, V.N.Ostrovsky, S.Watanabe, M.Matsuzawa: "DECAY PROCESS OF AN ATTRACTIVE BOSE-EINSTEIN CONDENSATE IN HYPERSPHERICAL COORDINATES"Atomic Collision Research in Japan. 29. 59 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Mutou, S.Watanabe, M.Matsuzawa: "EXTENSION OF HYPERSPHERICAL METHOD TO ATTRACTIVE TWO-COMPONENT BOSE-EINSTEIN CONDENSATES"Atomic Collision Research in Japan. 29. 63 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Toyota, S.Watanabe: "TWO-CHANNEL SIEGERT PSEUDO STATE FORMULATION FOR S-WAVE RESONANCES IN COULOMB THREE-BODY PROBLEM"Atomic Collision Research in Japan. 29. 71 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Morishita, C.D.Lin: "Electron Correlations in Atoms : Hyperspherical approach to Multiply Excited Atoms.A chapter in "A garden of Quanta""World Scientific Co.Pte.Ltd.. 502 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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