皆様
来年の夏（７月３１日から８月４日）にイスタンブールで非エルミート系の国際会議PHHQP20が行われます。
ホームページができたとのことです。アナウンスを転送致します。
羽田野
>
> Dear Colleagues,
>
> I am pleased to inform you that the 20th International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics (PHHQP20) will be held at Koç University, Istanbul, 31 July – 04 August, 2023.
>
> Similar to the previous meetings in this series, PHHQP20 aims at providing an opportunity for exchange of ideas among the experts working in various theoretical as well as experimental aspects of non-Hermitian operators. Among the topics to be covered in PHHQP20 are spectral properties and applications of non-Hermitian operators, PT-symmetry and its physical realizations, exceptional points and spectral singularities, indefinite-metric theories, open quantum systems, and resonances.
>
>
> The website of PHHQP12 is located at phhqp20.ku.edu.tr/ <phhqp20.ku.edu.tr/>
>
> j
>
> Sincerely,
>
> Ali Mostafazadeh (on behalf of local organizers)
>
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羽田野直道
277-8574 千葉県柏市柏の葉5-1-5
東京大学生産技術研究所
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