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Các bài báo tiêu biểu
QCD equations of state and speed of sound in neutron stars
Tập 31 Số 1 - 2021
AbstractNeutron stars are cosmic laboratories to study dense matter in quantum
chromodynamics (QCD). The observable mass-radius relations of neutron stars are
determined by QCD equations of state and can reflect the properties of QCD phase
transitions. In the last decade, there have been historical discoveries in
neutron stars; the discoveries of two-solar mass neutron stars and neutron star
merge...
New era of synchrotron radiation: fourth-generation storage ring
- 2021
AbstractThere had been remarkable progress in developing third-generation
electron storage rings as the main sources of very bright photon beams.
Fourth-generation storage rings based on the multi-bend achromat lattice concept
may be able to surpass the brightness and coherence that are attained using
present third-generation storage rings. In this paper, we survey ongoing work
around the world to...
Analysis of the X(3960) and related tetraquark molecular states via the QCD sum rules
Tập 32 Số 1
AbstractIn this work, we study the $$D\bar{D}$$ D D ¯ , DD, $$D\bar{D}_s$$ D D ¯
s , $$DD_s$$ D D s , $$D_s\bar{D}_s$$ D s D ¯ s and $$D_sD_s$$ D s D s
tetraquark molecular states with the $$J^{PC}=0^{++}$$ J PC = 0 + + via the QCD
sum rules. The prediction $$M_{D_s\bar{D}_s} = 3.98\pm 0.10\, \text {GeV}$$ M D
s D ¯ s = 3.98 ± 0.10 GeV is in very good agreement with the experimental value
$$M_{X(3...
Valence skipping phenomena, charge Kondo effect, and superconductivity
Tập 32 - Trang 1-18 - 2022
We review a recent progress of a superconductivity and a charge Kondo effect
mediated by valence skippers which are elements skipping the valence state. To
understand the valence skipping phenomenon, we introduce a negative-U effect
phenomenologically, and we show an origin of the negative-U effect, a
superconductivity and charge Kondo effect based on the negative-U effect. We
also show a new mech...
Understanding the Mott insulating state in 1T-TaS2 and 1T-TaSe2
- 2022
AbstractIn this article, we review the recent progress of the scanning tunneling
microscopy studies of 1T-TaS2 and 1T-TaSe2 for bulk single crystals and
molecular beam epitaxy monolayer films. We focus on how to understand the Mott
insulating state in the whole set of materials, even when the stacking order
takes effect. Based on this understanding, we discuss tuning the Mott insulator
to a metall...
Generalized uncertainty relations for multiple measurements
Tập 32 Số 1
AbstractThe uncertainty relation is regarded as a remarkable feature of quantum
mechanics differing from the classical counterpart, and it plays a backbone role
in the region of quantum information theory. In principle, the uncertainty
relation offers a nontrivial limit to predict the outcome of arbitrarily
incompatible observed variables. Therefore, to pursue a more general uncertainty
relations ...
Status of the RAON project in Korea
AbstractA new rare-isotope beam (RIB) accelerator complex, RAON, is under
construction in South Korea. RAON employs two RIB production methods, namely,
isotope separation online (ISOL) and in-flight fragmentation (IF). According to
the original design, ISOL and IF can run independently, and RAON ultimately
combines them to provide more neutron-rich ion beams for the experiments. In
2021, due to th...
β-Ga2O3 material properties, growth technologies, and devices: a review
Tập 32 - Trang 1-14 - 2022
Rapid progress in β-gallium oxide (β-Ga2O3) material and device technologies has
been made in this decade, and its superior material properties based on the very
large bandgap of over 4.5 eV have been attracting much attention. β-Ga2O3
appears particularly promising for power switching device applications because
of its extremely large breakdown electric field and availability of
large-diameter, h...
STM studies for surface-mounted molecular rotors: a mini review
AbstractA 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 ...
An overview of polarized neutron instruments and techniques in Asia Pacific
Tập 33 Số 1
AbstractPolarized neutron scattering is an indispensable tool for exploring a
vast range of scientific phenomena. With its dynamic scientific community and
significant governmental support as well as the rapid economic growth, the
Asia–Pacific region has become a key player in the worldwide neutron scattering
arena. From traditional research reactors to cutting-edge spallation neutron
sources, thi...