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2011 Fiscal Year Annual Research Report

量子多成分系分子理論システムの構築およびプロトニクス・ポジトロニクスへの展開

Research Project

Project/Area Number 23350010
Research InstitutionYokohama City University

Principal Investigator

立川 仁典  横浜市立大学, 生命ナノシステム科学研究科, 教授 (00267410)

Co-Investigator(Kenkyū-buntansha) 北 幸海  横浜市立大学, その他の研究科, 助教 (40453047)
志賀 基之  独立行政法人日本原子力研究開発機構, その他部局等, 研究員 (40370407)
Keywords量子多成分系分子理論 / プロトニクス / ポジトロニクス / 量子モンテカルロ法 / 経路積分シミュレーション
Research Abstract

これまで申請者は、水素原子核の量子揺らぎや陽電子系にも適用可能な量子多成分系分子理論を開発し、最近では陽電子化合物エネルギーの世界記録樹立といった成果を得た。本研究課題では、当該分野をリードし続けるため、(1)量子多成分系分子理論システムの構築と、(2)高精度・大規模計算の実現といった研究項目を実施する。本年度の研究実績の概要を以下に示す。
(1)量子多成分系分子理論システムの構築: ①主に高精度化を目的とし、以下の手法開発を行った。(①A)量子多成分系MO法では、従来のCI法の拡張(多成分行列要素の効率的な導出等)を行った。(①B)量子多成分系QMC法では、高精度物理量の算出のために、初期試行関数の拡張を行った。②システム実装として、量子多成分系分子理論プログラムの統合を図った。入出力を共通化すると共に、マニュアル整備も始めた。
(2)高精度・大規模計算の実現: ①プロトニクスへの展開として、経路積分分子動力学方を用いて、主に低障壁水素結合をターゲットとした高精度計算を実現した。水素原子核の量子効果の影響、H/D同位体効果を探り、論文として報告した。②ポジトロニクスへの展開として、(1)で開発した量子多成分系MO法や量子多成分系QMC法を用いて、陽電子吸着能に関する高精度計算を実現し、論文として報告した。
なお、研究分担者には(1)①②のシステム構築や、(2)①のプロトニクスへの展開に分担いただいた。研究協力者として、横浜市立大学学生に、(2)全般の計算補助をお願いした。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

(1)量子多成分系分子理論システムの構築と、(2)高精度・大規模計算の実現といった研究項目を具体的に実施でき、多くの論文を報告することができた。

Strategy for Future Research Activity

本年度も同じペースで進める予定である。

  • Research Products

    (33 results)

All 2012 2011 Other

All Journal Article (25 results) (of which Peer Reviewed: 24 results) Presentation (7 results) (of which Invited: 7 results) Remarks (1 results)

  • [Journal Article] Quantum tautomerization in porphycene and its isotopomers: Path-integral molecular dynamics simulations2012

    • Author(s)
      T. Yoshikawa, S. Sugawara, T. Takayanagi, M. Shiga, and M. Tachikawa
    • Journal Title

      Chem. Phys.

      Volume: 394 Pages: 46-51

    • Peer Reviewed
  • [Journal Article] Vibrational enhancement of positron affinities for nonpolar carbon dioxide and carbon disulfide molecules: Multi- component molecular orbital study for vibrational excited states2012

    • Author(s)
      K. Koyanagi, Y. Kita, and M. Tachikawa
    • Journal Title

      Int. J. Quant. Chem.

      Volume: 113 Pages: 382-385

    • Peer Reviewed
  • [Journal Article] Temperature dependence of self-assembled molecular capsules consisting of gear-shaped amphiphile molecules with molecular dynamics simulations2012

    • Author(s)
      J. Koseki, Y. Kita, S. Hiraoka, U. Nagashima, and M. Tachikawa
    • Journal Title

      Int. J. Quant. Chem.

      Volume: 113 Pages: 397-400

    • Peer Reviewed
  • [Journal Article] Bound states of positron with simple carbonyl and aldehyde species with configuration interaction multi-component molecular orbital and local vibrational approaches2012

    • Author(s)
      M. Tachikawa, Y. Kita, R. J. Buenker
    • Journal Title

      New J. Phys.

      Volume: 14 Pages: 035004 (10p)

    • Peer Reviewed
  • [Journal Article] Systematic theoretical investigation of positron-binding to amino acid molecules with ab initio multi-component molecular orbital approach2012

    • Author(s)
      K. Koyanagi, Y. Kita, M. Tachikawa
    • Journal Title

      Eur. Phys. J. D.

      Volume: 66 Pages: 121 (7pages)

    • Peer Reviewed
  • [Journal Article] Fixed-node quantum Monte Carlo for molecule2012

    • Author(s)
      立川仁典, 北幸海
    • Journal Title

      巨大分子系の計算化学

      Volume: 無し Pages: 34-38

    • Peer Reviewed
  • [Journal Article] 陽電子束縛化合物の第一原理計算2012

    • Author(s)
      立川仁典, 北幸海
    • Journal Title

      日本物理学会誌

      Volume: 67 Pages: 33-36

    • Peer Reviewed
  • [Journal Article] Ab initio quantum chemical study on the mechanism of exceptional behavior of lysine for ion yields in MALDI - Role of vibrational entropic contribution in thermally averaged proton affinities -2011

    • Author(s)
      M. Hatakeyama and M. Tachikawa
    • Journal Title

      J. Mass Spectrometry

      Volume: 46 Pages: 376-382

  • [Journal Article] Analytical optimization of orbital exponents in Gaussian-type functions for molecular systems based on MCSCF and MP2 levels of fully variational molecular orbital method2011

    • Author(s)
      N. Shimizu, T. Ishimoto, M. Tachikawa
    • Journal Title

      Theor. Chem. Acc.

      Volume: 394 Pages: 46-51

    • Peer Reviewed
  • [Journal Article] Role of CH-pi interaction energy in self-assembled gear-shaped amphiphile molecules: Correlated ab initio molecular orbital and density functional theory study2011

    • Author(s)
      J. Koseki, Y. Kita, S. Hiraoka, U. Nagashima, M. Tachikawa
    • Journal Title

      Theor. Chem. Acc.

      Volume: 130 Pages: 1055-1059

    • Peer Reviewed
  • [Journal Article] Quantum Proton Transfer in Hydrated Sulfuric Acid Clusters: A Perspective from Semiempirical Path Integral Simulations2011

    • Author(s)
      S. Sugawara, T. Yoshikawa, T. Takayanagi, M. Shiga, M. Tachikawa
    • Journal Title

      J. Phys. Chem. A.

      Volume: 115 Pages: 11486 - 11494

    • Peer Reviewed
  • [Journal Article] Isotope effect of proton and deuteron adsorption site on Zeolite-Templated carbon using path integral molecular dynamics2011

    • Author(s)
      K. Suzuki, M. Tachikawa, H. Ogawa, S. Ittisanronnachai, H. Nishihara, T. Kyotani, U.
    • Journal Title

      Theor. Chem. Acc.

      Volume: 130 Pages: 1039-1042

    • Peer Reviewed
  • [Journal Article] Nuclear quantum effect on the hydrogen-bonded structure of guanine-cytosine pair2011

    • Author(s)
      M. Daido, A. Koizumi, M. Shiga, M. Tachikawa
    • Journal Title

      Theor. Chem. Acc.

      Volume: 130 Pages: 385-391

    • Peer Reviewed
  • [Journal Article] Ab initio quantum Monte Carlo study of the binding of a positron to alkali-metal hydrides2011

    • Author(s)
      Y. Kita, R. Maezono, M. Tachikawa, M. Towler, R. J. Needs
    • Journal Title

      J. Chem. Phys.

      Volume: 135 Pages: 054108 (5p)

    • Peer Reviewed
  • [Journal Article] Ab initio path integral simulation of AgOH(H2O)2011

    • Author(s)
      A. Koizumi, K. Suzuki, M. Shiga, M. Tachikawa
    • Journal Title

      Int. J. Quant. Chem.

      Volume: 112 Pages: 136-139

    • Peer Reviewed
  • [Journal Article] Theoretical study of the reversible photoconversion mechanism in Dronpa2011

    • Author(s)
      J. Koseki, Y. Kita, U. Nagashima, M. Tachikawa
    • Journal Title

      Procedia Comput. Sci.

      Volume: 4 Pages: 251-260

    • Peer Reviewed
  • [Journal Article] Molecular dynamics simulation for irreversible feature of green fluorescent protein before and after photoactivation2011

    • Author(s)
      J. Koseki, Y. Kita, M. Tachikawa
    • Journal Title

      Chem. Lett.

      Volume: 40 Pages: 476-477

    • Peer Reviewed
  • [Journal Article] Path integral molecular dynamics for hydrogen adsorption site of zeolite-templated carbon with semi-empirical PM3 potential2011

    • Author(s)
      K. Suzuki, M. Kayanuma, M. Tachikawa, H. Ogawa , H. Nishihara, T. Kyotani, U. Nagashima
    • Journal Title

      Comp. Theor. Chem.

      Volume: 975 Pages: 128-133

    • Peer Reviewed
  • [Journal Article] Nuclear quantum effect on the dissociation energies of cationic hydrogen clusters2011

    • Author(s)
      M. Sugimoto, M. Shiga, M. Tachikawa
    • Journal Title

      Comp. Theor. Chem.

      Volume: 975 Pages: 31-37

    • Peer Reviewed
  • [Journal Article] Theoretical investigations of nuclear quantum effect on molecular magnetic properties based on multi-component density functional theory2011

    • Author(s)
      Y. Kita, M. Tachikawa
    • Journal Title

      Comp. Theor. Chem.

      Volume: 975 Pages: 9-12

    • Peer Reviewed
  • [Journal Article] A concerted mechanism between protron transfer of Zundel anion and displacement of counter cation2011

    • Author(s)
      A. Koizumi, K. Suzuki, M. Shiga, M. Tachikawa
    • Journal Title

      J. Chem. Phys. (communication)

      Volume: 134 Pages: 031101 (3p)

    • Peer Reviewed
  • [Journal Article] Theoretical study on mechanisms of structural rearrangement and ionic dissociation in the HCl(H2O)4 cluster with path-integral molecular dynamics simulations2011

    • Author(s)
      S. Sugawara, T. Yoshikawa, T. Takayanagi, M. Tachikawa
    • Journal Title

      Chem. Phys. Lett.

      Volume: 501 Pages: 238-244

    • Peer Reviewed
  • [Journal Article] Bound states of positron with nitrile species with configuration interaction multi-component molecular orbital approach2011

    • Author(s)
      M. Tachikawa, Y. Kita, R. J. Buenker
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 13 Pages: 2701-2705

    • Peer Reviewed
  • [Journal Article] Nuclear quantum effect on hydrogen adsorption site of zeolite-templated carbon model using path integral molecular dynamics2011

    • Author(s)
      K. Suzuki, M. Kayanuma, M. Tachikawa, H. Ogawa, H. Nishihara, T. Kyotani, U. Nagashima
    • Journal Title

      J. Alloys and Compounds

      Volume: 509S Pages: S868-S871

    • Peer Reviewed
  • [Journal Article] 新しい分子物理化学の確立―ポジトロニクス(陽電子技術)にむけて2011

    • Author(s)
      立川仁典, 北幸海
    • Journal Title

      化学(最新のトピックス)

      Volume: 66 Pages: 68-69

    • Peer Reviewed
  • [Presentation] Bound states of positron with nitrile species with several multi-component molecular theories2012

    • Author(s)
      Masanori Tachikawa
    • Organizer
      International Workshop on Positrons in Astrophysics
    • Place of Presentation
      Murren, Switzerland
    • Year and Date
      20120321-20120321
    • Invited
  • [Presentation] Multi component molecular theory for hydrogen bonded systems and positronic compounds2012

    • Author(s)
      Masanori Tachikawa
    • Organizer
      The 4th French-Japanese Workshop on Computational Methods in Chemistry
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      20120306-20120306
    • Invited
  • [Presentation] First-principles Calculations for Positron-attached Molecules2012

    • Author(s)
      Masanori Tachikawa
    • Organizer
      The Sixth General Meeting of ACCMS-VO
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      20120212-20120212
    • Invited
  • [Presentation] Multi component molecular theory for hydrogen bonded systems and positronic compounds2011

    • Author(s)
      Masanori Tachikawa
    • Organizer
      XVIth International Workshop on Quantum Systems in Chemistry and Physics (QSCP-XVI)
    • Place of Presentation
      Kanazawa, Ishikawa
    • Year and Date
      20110914-20110914
    • Invited
  • [Presentation] Path Integral simulation for Hydrogen Bonded Systems: Protonic Quantum Nature and H/D Isotope Effect2011

    • Author(s)
      Masanori Tachikawa
    • Organizer
      14th Asian Chemical Congress
    • Place of Presentation
      Bangkok, Thailand
    • Year and Date
      20110908-20110908
    • Invited
  • [Presentation] Multi component molecular theory for hydrogen bonded systems and positronic compounds2011

    • Author(s)
      Masanori Tachikawa
    • Organizer
      7th Congress of the International Society for Theoretical Chemical Physics (ISTCP-VII)
    • Place of Presentation
      Waseda, Tokyo
    • Year and Date
      20110904-20110904
    • Invited
  • [Presentation] Path integral simulation for hydrogen bonded systems: Protonic quantum nature and H/D isotope effect2011

    • Author(s)
      Masanori Tachikawa
    • Organizer
      ISOTOPES2011
    • Place of Presentation
      Provence-Alpes-Côte d’Azur, FRANCE
    • Year and Date
      20110622-20110622
    • Invited
  • [Remarks] 横浜市立大学大学院生命ナノシステム科学研究科量子物理化学研究室

    • URL

      http://www-user.yokohama-cu.ac.jp/~tachi/

URL: 

Published: 2014-07-24  

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