AAPPS bulletin

February 2024Vol 34

Research and Review
  • Studies on electromagnetic dipole responses of atomic nuclei at RCNP

    Atsushi Tamii & Nobuyuki Kobayashi

    Abstract Electric dipole (E1) and spin-magnetic dipole (spin-M1) responses of nuclei have been studied by proton inelastic scattering experiments at forward angles, including zero degrees, at the Research Center for Nuclear Physics (RCNP) by employing a proton beam 295 or 392 MeV and the high-resolution magnetic spectrometer Grand Raiden. The E1 response of nuclei is the most fundamental nuclear response to the external field and is relevant to photo-nuclear reactions. After introducing the rel

    More to Read
  • STM studies for surface-mounted molecular rotors: a mini review

    Tianyi Yang & Ruiqin Zhang

    Abstract A molecular rotor is a molecule/molecular system that performs rotary motions under an external stimulus. Molecular rotors are promising for applications in medicine, optical usage, information science, etc. A molecular rotor is also a crucial component in constructing more sophisticated functional molecular machines. Anchoring molecular rotors on surfaces is regarded as a feasible way of building functional molecular rotor systems. Scanning tunneling microscope (STM) is a powerful too

    More to Read
  • The two-body strong decays of the fully-charm tetraquark states

    Zhi-Gang Wang & Xiao-Song Yang

    Abstract We study the hadronic coupling constants in the two-body strong decays of the fully-charm tetraquark states with the \(J^{PC}=0^{++}\), \(1^{+-}\), and \(2^{++}\) via the QCD sum rules based on rigorous quark-hadron duality. Then we obtain the hadronic coupling constants and partial decay widths therefore total decay widths, which support assigning the X(6552) as the first radial excitation of the scalar tetraquark state. And other predictions can be used to diagnose exotic states in t

    More to Read
  • Cosmological gravitational waves from isocurvature fluctuations

    Guillem Domènech

    Abstract Gravitational waves induced by large primordial curvature fluctuations may result in a sizable stochastic gravitational wave background. Interestingly, curvature fluctuations are gradually generated by initial isocurvature fluctuations, which in turn induce gravitational waves. Initial isocurvature fluctuations commonly appear in multi-field models of inflation as well as in the formation of scattered compact objects in the very early universe, such as primordial black holes and solito

    More to Read
  • Collection of unconventional transport phenomena: natural obstacle or vibrant guiding principle for the design of molecular junctions?

    Jinlong Ren, Tianchen Li, Zhuang Li, Decheng Kong, Guangcun Shan & KunPeng Dou

    Abstract The real atomic scale details of molecular junctions would be of much complexity and can yield a plethora of “counterintuitive” results. Here, we provide an overview of four unconventional intentional or unintentional transport phenomena in molecular junctions, in particular, unconventional tunneling length-dependent transport behavior, deviation from Kirchhoff’s superposition law, dual roles of imperfect engineering, and masked quantum interference. These abnormal phenomena are not en

    More to Read
  • Flat bands, sharp physics

    Daniel Leykam

    Abstract Flat bands arise in periodic media when symmetries or fine-tuning result in perfect wavepacket localisation. Flat band localisation is fragile and exhibits remarkably sharp sensitivity to perturbations including interactions and disorder, leading to a variety of interesting quantum and classical phenomena. Originally a theoretical curiosity, advances in fabrication methods have allowed flat band physics to be observed down to the nanoscale. This article briefly reviews progress in the

    More to Read
  • Phonon thermal transport in bilayer polycrystalline graphene nanoribbons: effects of interlayer interaction, grain size, and vacancy defects

    Zi-Qiang Yang, Muhammad Asif Shakoori & Hai-Peng Li

    Abstract In this paper, molecular dynamics simulations have been employed to investigate the phonon thermal transport in bilayer polycrystalline graphene nanoribbon (pGNR/pGNR), compared with bilayer graphene nanoribbon (GNR/GNR) and pGNR/GNR heterostructure. The interfacial thermal resistance (ITR) of bilayer structures was also calculated using the heat dissipation method. The effects of interlayer interaction, grain size, and vacancy defects on ITR and in-plane phonon thermal conductivity of

    More to Read
News and Views
  • 2023 Nishina Memorial Prize

    AAPPS

    8 2023 Nishina Memorial Prize Dr. Atsuko Ichikawa Professor, Department of Physics, Graduate School of Science, Tohoku University. 8.1 Constraining CP violating phase δ in neutrino oscillations The T2K experiment searches for a violation of the symmetry between particles and antiparticles, called CP violation, in the neutrino oscillation phenomena. In the experiment, the J-PARC 30-GeV, high-power proton accelerator located at Tokai, Ibaraki Prefecture, launches neutrinos and antineutrinos separ

    More to Read
  • The Physical Society of Japan: second (2024) AAPPS-JPS Award

    JPS

    7 The Physical Society of Japan: second (2024) AAPPS-JPS Award by JPS In order to promote research in physics in Japan, the Physical Society of Japan (JPS) and the Association of Asia Pacific Physical Societies (AAPPS) shall jointly award the “AAPPS-JPS Award” for young JPS members who achieve outstanding research results. The 2024 winners of the second Association of Asia Pacific Physical Society (AAPPS)—the Physics-JPS Award, are listed below. Tatsuya Kobayashi National Institute for Fusion S

    More to Read
  • Young Scientist Award of the Physical Society of Japan, 2024

    JPS

    6 Young Scientist Award of the Physical Society of Japan, 2024 by JPS Every year, the Physical Society of Japan presents its Young Scientist Awards to young researchers to recognize outstanding achievements in their early research careers. This year’s winners were recently decided by the board of directors of the JPS based on the recommendations of the selection committees established in 19 divisions of the JPS. The maximum number of winners from each division has been determined based on the n

    More to Read
  • Indonesia-APCTP workshop on quantum computing and simulation

    Ahmad Ridwan Tesna Nugraha

    5 Indonesia-APCTP workshop on quantum computing and simulation by Ahmad Ridwan Tesna Nugraha The National Research and Innovation Agency (BRIN), through its Research Center for Quantum Physics, successfully organized a workshop on quantum computing and simulation from December 6 to 8 2023. This workshop was organized jointly with the Department of Physics, University of Indonesia (UI), and sponsored by the Asia Pacific Center for Theoretical Physics (APCTP). The Center for Theoretical Physics o

    More to Read
  • Vigyan Pratibha — enhancing science and mathematics learning experiences in Indian high schools

    Deepa Chari, Ankush Gupta, and Arnab Bhattacharya (Vigyan Pratibha HBCSE, and Apex coordinator team)

    4 Vigyan Pratibha — enhancing science and mathematics learning experiences in Indian high schools by Deepa Chari, Ankush Gupta, and Arnab Bhattacharya (Vigyan Pratibha HBCSE, and Apex coordinator team) Vigyan Pratibha is a Department of Atomic Energy, India, funded program aimed at increasing high school students’ scientific and mathematics proficiencies through capacity building of their teachers. The program is operational under the leadership of Homi Bhabha Centre for Science Education and T

    More to Read
  • Congratulations to Prof. Qikun Xuen, AAPPS Council Secretary 2008–2010 for winning 2024 APS Oliver E. Buckley Prize

    Gui-Lu Long

    3 Congratulations to Prof. Qikun Xuen, AAPPS Council Secretary 2008–2010 for winning 2024 APS Oliver E. Buckley Prize by Gui-Lu Long On 24 October 2023, the American Physical Society announced that Prof. Qikun Xue, AAPPS Council Secretary 2008–2010, Professor at Tsinghua University, and President of Southern University of Science and Technology, and Prof. Ashvin Vishwanath, from Harvard University, are winners of the 2024 Oliver E. Buckley Condensed Matter Physics Prize. Oliver Buckley Prize is

    More to Read
  • Honorary AAPPS fellow conferred to Prof. Jie Zhang, AAPPS President 2008–2010

    Gui-Lu Long

    2 Honorary AAPPS fellow conferred to Prof. Jie Zhang, AAPPS President 2008–2010 by Gui-Lu Long Prof Jie Zhang, AAPPS President 2008–2010, was awarded the title of AAPPS Honorary Fellow during the 14th annual workshop on frontiers of optics in Xiong-an in September 2023. The certificate was presented to Jie by Prof. Guozhen Yang, former president of CPS. Prof. Gui-Lu Long, President of AAPPS 2017–2019, chaired the ceremony. In the introduction speech, Gui-Lu summarized the three major contributi

    More to Read
  • Honorary AAPPS fellow conferred to Prof. Jia-er Chen, AAPPS President 1997–1999

    Gui-Lu Long

    1 Honorary AAPPS fellow conferred to Prof. Jia-er Chen, AAPPS President 1997–1999 by Gui-Lu Long On the occasion of his 90th birthday this October, Prof. Ja-er Chen, president of AAPPS during 1997–1999 and a world-renowned physicist in accelerator physics, was presented the certificate of AAPPS honorary fellow for his great contributions to the AAPPS, and the decision was made in an AAPPS council meeting in 2019. The certificate was conferred to him by Prof. Jie Zhang, the president of CPS and

    More to Read