AAPPS bulletin

April 2024Vol 34

Research and Review
  • A newly developed Cu(Rh) alloy film and its characteristics and applications

    Chon-Hsin Lin

    Abstract A new type of copper (Cu)-rhodium (Rh)-alloy, Cu(Rh), films is developed by co-sputtering copper and rhodium onto silicon (Si) substrates under an argon (Ar) atmosphere. The new films are next annealed at 600 and 670 °C, or alternatively at 100 and 450 °C, for 1 h. Longer annealing to the films, for up to 8 days, is also conducted to explore resistivity variation. The resistivity of the new 300-nm-thick film is 2.19 μΩ cm after annealing at 670 °C for 1 h and drifts to 2.26 and 2.14 μΩ

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  • A quantum algorithm for linear differential equations with layerwise parameterized quantum circuits

    Junxiang Xiao, Jingwei Wen, Zengrong Zhou, Ling Qian, Zhiguo Huang, Shijie Wei & Guilu Long

    Abstract Solving linear differential equations is a common problem in almost all fields of science and engineering. Here, we present a variational algorithm with shallow circuits for solving such a problem: given an \(N \times N\) matrix \({\boldsymbol{A}}\), an N-dimensional vector \(\boldsymbol{b}\), and an initial vector \(\boldsymbol{x}(0)\), how to obtain the solution vector \(\boldsymbol{x}(T)\) at time T according to the constraint \(\textrm{d}\boldsymbol{x}(t)/\textrm{d} t = {\boldsymbo

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  • The study of angular distance distribution to the solar flares during different solar cycles

    Ramy Mawad

    Abstract The angular distance of the solar flares to the projective point of the center of the solar disk on the solar spherical surface has been studied by the heliographical or helioprojective coordinates, during the periods 1975–2021 for GOES events and 2002–2021 for RHESSI events, hereafter “distance.” It gives a specific distribution curvature. It has also been noted that when using the number of solar flare events in each satellite, GOES or RHESSI, or even using the sum of the flux (class

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  • Intersections of ultracold atomic polarons and nuclear clusters: how is a chart of nuclides modified in dilute neutron matter?

    Hiroyuki Tajima, Hajime Moriya, Wataru Horiuchi, Eiji Nakano & Kei Iida

    Abstract Neutron star observations, as well as experiments on neutron-rich nuclei, used to motivate one to look at degenerate nuclear matter from its extreme, namely, pure neutron matter. As an important next step, impurities and clusters in dilute neutron matter have attracted special attention. In this paper, we review in-medium properties of these objects on the basis of the physics of polarons, which have been recently realized in ultracold atomic experiments. We discuss how such atomic and

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  • Density-based Reactivity Theory Applied to Excited States

    Xiaoyan An, Wenbiao Zhang, Xin He, Meng Li, Chunying Rong & Shubin Liu

    Abstract Excited states are essential to many chemical processes in photosynthesis, solar cells, light-emitting diodes, and so on, yet how to formulate, quantify, and predict physiochemical properties for excited states from the theoretical perspective is far from being established. In this work, we leverage the four density-based frameworks from density functional theory (DFT) including orbital-free DFT, conceptual DFT, information-theoretic approach and direct use of density associated descri

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News and Views
  • An Overview of Thai Research in Physics: Achievements and Roadmaps for the Future

    TPS (Boonrucksar Soonthornthum, Dheerawan Boonyawan and Duangmanee Wongratanaphisan)

    6 An Overview of Thai Research in Physics: Achievements and Roadmaps for the Future by TPS (Boonrucksar Soonthornthum, Dheerawan Boonyawan and Duangmanee Wongratanaphisan) Introduction Physics research and its applications have developed significantly in Thailand during the past decade. The importance of physics as a basic science platform for the sustainable development of technology and high-performance personnel and for making substantial contributions to the socio-economic development of Th

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  • The Physical Society of Japan Announces the Recipients of the 29th Outstanding Paper Award

    JPS

    5 The Physical Society of Japan Announces the Recipients of the 29th Outstanding Paper Award by JPS In recognition of important achievements toward progress in physics, the Physical Society of Japan (JPS) annually selects outstanding papers from original research articles published in the Journal of the Physical Society of Japan, Progress of Theoretical Physics, Progress of Theoretical and Experimental Physics, and JPS Conference Proceedings. The selection committee has chosen four papers for t

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  • The Physical Society of Japan: The 5th (2024) Fumiko Yonezawa Memorial Prize

    JPS

    4 The Physical Society of Japan: The 5th (2024) Fumiko Yonezawa Memorial Prize by JPS The late Fumiko Yonezawa, emeritus professor of Keio University, made major contributions to physics, such as the development of the coherent potential approximation, and the theory of the metal–insulator transition in liquid selenium. Prof. Yonezawa served as the first female president of the Physical Society of Japan (JPS) and as the president of the Society for Women Scientists for a Bright Future, she also

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  • 18th ANPhA Board Meeting and Symposium

    Byungsik Hong (Chair of AAPPS-DNP)

    3 18th ANPhA Board Meeting and Symposium by Byungsik Hong (Chair of AAPPS-DNP) The 18th board meeting of the Asian Nuclear Physics Association (ANPhA) was held at the Institute of Basic Science (IBS), Daejeon, Korea on November 10, 2023. ANPhA also serves as the Division of Nuclear Physics (DNP) for AAPPS. ANPhA’s board meetings were held online from 2020 to 2022, and this year’s meeting was the first in-person meeting after the COVID-19 pandemic. The venue was the Institute for Rare Isotope Sc

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  • The 2023 AAPPS-APCTP C. N. Yang Award

    Rajdeep Singh Rawat (Chair of the C. N. Yang Award Committee)

    2 The 2023 AAPPS-APCTP C. N. Yang Award by Rajdeep Singh Rawat (Chair of the C. N. Yang Award Committee) The 2023 AAPPS-APCTP C. N. Yang Awards were presented to three outstanding and prospective young scholars, Danfeng LI (City University of Hong Kong), Li LI (Chinese Academy of Science), and Liyong ZHANG (Beijing Normal University). A total of 26 nominations were received from nominees of eight different nationalities, with representation in nine different sessions of the Asia Pacific Physics

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  • Ultracold research confirms pseudogap pairing due to strong attraction

    Hui Hu

    1 Ultracold research confirms pseudogap pairing due to strong attraction by Hui Hu Chinese physicists have made a new experimental observation, confirming the many-particle pairing of fermions, before they reach a critical temperature and exhibit remarkable quantum superfluidity. In a paper published in Nature [1], researchers at the University of Science and Technology of China (USTC) observed and quantified the pseudogap pairing in a strongly attractively interacting cloud of fermionic lithiu

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