SUGITA Ayumu

写真a

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Title

Associate Professor

Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Kyoto University -  Doctor(Science)

Research Interests 【 display / non-display

chaos, entanglement, quantum, quantum information

Association Memberships 【 display / non-display

  • The Physical Society of Japan

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Physical Electronics and Informatics Course   Associate Professor  

Graduate School 【 display / non-display

  • 1996.04
    -
    2000.03

    Kyoto University  Graduate School, Division of Natural Science 

  • 1994.04
    -
    1996.03

    Kyoto University  Graduate School, Division of Natural Science 

Graduating School 【 display / non-display

  • 1990.04
    -
    1994.03

    Kyoto University   Faculty of Science  

 

Published Papers 【 display / non-display

  • Periodic three-body orbits in the Coulomb potential

    Sindik Marija, Sugita Ayumu, Suvakov Milovan, Dmitrasinovic V

    PHYSICAL REVIEW E  98 ( 6 )  2018.12  [Refereed]

    DOI

  • Linear stability of periodic three-body orbits with zero angular momentum and topological dependence of Kepler's third law: a numerical test

    Dmitrasinovic V, Hudomal Ana, Shibayama Mitsuru, Sugita Ayumu

    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL  51 ( 31 )  2018.08  [Refereed]

    DOI

  • 重力三体問題における周期軌道の周期とトポロジーの関係

    廣瀬 瞭汰, 杉田 歩

    一般社団法人 日本物理学会 日本物理学会講演概要集  73 ( 0 ) 2474 - 2474 2018  [Refereed]

    DOI CiNii

  • XXZ模型の弱結合極限における非平衡定常状態

    三浦 優二, 杉田 歩

    一般社団法人 日本物理学会 日本物理学会講演概要集  73 ( 0 ) 2392 - 2392 2018  [Refereed]

    DOI CiNii

  • Origin of Temperature Gradient in Nonequilibrium Steady States in Weakly Coupled Quantum Spin Systems

    Ishida Toyohiko, Sugita Ayumu

    The Physical Society of Japan JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN  85 ( 7 ) 74006 - 1-10 2016.07  [Refereed]

     View Summary

    We study nonequilibrium steady states (NESSs) in quantum spin-1/2 chains in contact with two heat baths at different temperatures. We consider the weak-coupling limit both for spin–spin coupling in the system and for system–bath coupling. This setting allows us to treat NESSs with a nonzero temperature gradient analytically. We develop a perturbation theory for this weak-coupling situation and show a simple condition for the existence of nonzero temperature gradient. This condition is independent of the integrability of the system.

    DOI CiNii

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Conference Activities & Talks 【 display / non-display

  • 弱結合量子スピン系における非平衡定常状態

    杉田 歩

    日本物理学会第68会年次大会  2013.03 

  • 弱結合量子スピン系における非平衡定常状態

    杉田 歩

    日本物理学会第68会年次大会  2013.03 

  • 弱結合量子スピン系における非平衡定常状態

    杉田 歩

    日本物理学会2012年秋季大会  2012.09