• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Quantum simulations of Higgs mode in strongly correlated atomic gases on the honeycomb lattice

Research Project

Project/Area Number 26800216
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Atomic/Molecular/Quantum electronics
Research InstitutionTohoku Institute of Technology

Principal Investigator

Tsuchiya Shunji  東北工業大学, 公私立大学の部局等, 准教授 (80579772)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsHiggsモード / 光格子 / バレー内ペアリング / Kekuleパターン / Higgs束縛状態 / ペア密度波 / Kekule超伝導状態 / 蜂の巣格子 / スピン3重項超伝導 / スピン軌道相互作用 / クーペロン凝縮 / 量子相転移
Outline of Final Research Achievements

The Higgs particle plays a central role in the mechanism of mass generation in particle physics. It attracted attention by the recent discovery in the experiments at CERN's Large Hadron Collider. On the other hand, there are particles in solid-state materials such as magnets and superconductors that are analogous to the Higgs particle. These particles are called "Higgs mode". However, Higgs modes have not been much investigated because of the experimental difficulties. We theoretically study a Higgs mode in an atomic gas that is cooled down to ultra-low temperatures. We find a new type of low-energy Higgs mode that is spatially localized in the vicinity of impurities. We also study properties of atomic gases in a crystal that is artificially made of laser beams. We predict the emergence of a novel inhomogeneous superconducting state when the crystal has the honeycomb-lattice structure that is the same crystal structure as graphene.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (19 results)

All 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (14 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Remarks (2 results)

  • [Int'l Joint Research] ETH, Zurich(スイス)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Fulde-Ferrell-Larkin-Ovchinikov states in a superconducting ring with magnetic fields: Phase diagram and the first-order phase transitions2015

    • Author(s)
      R. Yoshii, S. Takada, S. Tsuchiya, G. Marmorini, H. Hayakawa, and M. Nitta
    • Journal Title

      Physical Review B

      Volume: 92 Issue: 22 Pages: 224512-224512

    • DOI

      10.1103/physrevb.92.224512

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Fano resonance through Higgs bound states in tunneling of Nambu-Goldstone modes2015

    • Author(s)
      Takers Nakayama, Ippei Danshita, Tetsuro Nikuni, Shunji Tsuchiya
    • Journal Title

      Physical Review A

      Volume: 92 Issue: 4 Pages: 043610-043610

    • DOI

      10.1103/physreva.92.043610

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] ディラック電子系におけるバレー内ペアリングによるp波超伝導状態2016

    • Author(s)
      土屋俊二, 御領潤, 荒畑恵美子, Manfred Sigrist
    • Organizer
      日本物理学会2015年度年次大会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] 調和トラップ中のフェルミ超流動体におけるHiggsモードの振る舞い2016

    • Author(s)
      時本純, 土屋俊二, 二国徹郎
    • Organizer
      日本物理学会2015年度年次大会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-20
    • Related Report
      2015 Annual Research Report
  • [Presentation] 粒子・正孔対称性が僅かに破れた超流動体の集団励起を記述する場の量子論の定式化2016

    • Author(s)
      段下一平, 中山健, 二国徹朗, 土屋俊二
    • Organizer
      日本物理学会2015年度年次大会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Cooperon condensation and intra-valley spin-triplet pairing in Dirac fermion systems2016

    • Author(s)
      S. Tsuchiya, J. Goryo, E, Arahata, and M. Sigrist
    • Organizer
      International Workshop on Superconductivity and Related Functional Materials 2016
    • Place of Presentation
      東北大学
    • Year and Date
      2016-03-17
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fano resonance through Higgs bound states in tunneling of Nambu-Goldstone modes2016

    • Author(s)
      二国徹朗, 中山健, 段下一平, 土屋俊二
    • Organizer
      研究会「量子渦と非線形波動 2016」
    • Place of Presentation
      東京理科大学, 森戸記念館
    • Year and Date
      2016-01-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Fano resonance between Nambu-Goldstone modes and Higgs bound states in a superfluid2015

    • Author(s)
      I. Danshita, T. Nakayama, T. Nikuni, and S. Tsuchiya
    • Organizer
      Ugo Fano Symposium
    • Place of Presentation
      Rome International Center for Materials Science
    • Year and Date
      2015-12-17
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ano resonance through Higgs bound states in tunneling of Nambu-Goldstone modes2015

    • Author(s)
      土屋俊二, 中山健, 二国徹朗, 段下一平
    • Organizer
      京都大学基礎物理学研究所研究会「熱場の量子論とその応用」
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2015-09-01
    • Related Report
      2015 Annual Research Report
  • [Presentation] Fano resonance through Higgs bound states in tunneling of Nambu-Goldstone modes”2015

    • Author(s)
      S. Tsuchiya, T. Nakayama, T. Nikuni, and I. Danshita
    • Organizer
      International Workshop on “Cold Atoms meet High Energy Physics”
    • Place of Presentation
      European Center for Theoretical Studies in Nuclear Physics and Related Areas
    • Year and Date
      2015-06-22
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Higgs bound states and heavy solitons of Bose gases in optical lattices2015

    • Author(s)
      I. Danshita, T. Nakayama, T. Nikuni, S. Tsuchiya, D. Yamamoto, and Y. Kato
    • Organizer
      INF International Conference, “Frontiers in Quantum Simulation with Cold Atoms”
    • Place of Presentation
      Institute For Nuclear Theory, University of Washington
    • Year and Date
      2015-04-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fano resonance between Higgs bound states and Nambu-Goldstone modes2015

    • Author(s)
      中山健
    • Organizer
      ISSP-MPIPKS Joint Workshop "Dynamics of Strongly Correlated Systems"
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2015-03-30
    • Related Report
      2014 Research-status Report
  • [Presentation] ヒッグス束縛状態を介する南部ゴールドストーンモードの非対称共鳴トンネル現象2015

    • Author(s)
      中山健
    • Organizer
      日本物理学会2014年度年次大会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2015-03-21
    • Related Report
      2014 Research-status Report
  • [Presentation] Cooperon condensation and unconventional superconducting states in topological insulators2014

    • Author(s)
      土屋俊二
    • Organizer
      International conference on topological quantum phenomena
    • Place of Presentation
      京都大学
    • Year and Date
      2014-12-17
    • Related Report
      2014 Research-status Report
  • [Presentation] Higgs mode in a superfluid of Dirac fermions2014

    • Author(s)
      土屋俊二
    • Organizer
      International Workshop “Higgs modes in Condensed Matter and Quantum Gases”
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2014-06-24
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Higgs amplitude mode in a superfluid of Dirac fermions2014

    • Author(s)
      土屋俊二
    • Organizer
      物性研究所短期研究会「スーパーマターが拓く新量子現象」
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2014-04-19
    • Related Report
      2014 Research-status Report
    • Invited
  • [Remarks] Shunji Tsuchiya's homepage

    • URL

      http://shunjitsuchiya.weebly.com

    • Related Report
      2015 Annual Research Report
  • [Remarks] Shunji Tsuchiya's Homepage

    • URL

      http://shunjitsuchiya.weebly.com

    • Related Report
      2014 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2017-05-10  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi