The search for double hypernucleus (DH) with two units of Strangeness has now reached 46 sample events. The only one that has continued to detect DH in these 35 years is the experiment using nuclear emulsion as a detector. Regarding the double-Λ hypernucleus, which is a nucleus having two Λ particles, the energy that binds the two Λ particles to the nucleus seems to change linearly with the atomic-mass number. There seems to be a level structure for s- and p-state in the Ξ hypernucleus (¹⁵_Ξ C), where the Ξ^－ particle is deeply bound to ¹⁴N nucleus by the strong force beyond Coulomb force. In near future, we expect to obtain more detailed information on DH by introducing a machine-learning model to scan DH in whole area of the emulsion.

The anomalous magnetic moment of muon (muon g-2) has attracted a lot of interests of particle physicists. Recently, Fermilab published the first result on the muon g-2 measurement, which confirmed the Brookhaven E821 result. Combining the Fermilab and Brookhaven results, the experimental value becomes deviated from the Standard Model prediction at the 4.2σ level. In this article, we will overview the status and issues on the Standard Model value and discuss interpretations by physics beyond the Standard Model.

Confined water inside single-walled carbon nanotubes (SWCNTs) with mean diameters D larger than ca. 1.4 nm was studied using ²H nuclear magnetic resonance spectroscopy, X-ray diffraction measurements, and molecular dynamics calculations. The results were compared with those for hydrophilic pores and three-dimensional pores. It was found that faster water dynamics could be achieved by increasing the hydrophobicity of the pore walls and decreasing the pore diameters. Upon cooling below 220 K, water inside the SWCNTs undergoes a dynamic/structural transition at T_c～210 K, which depends on D. It was also predicted by MD calculations that a new form of ice, ice nanoribbon, can be formed within a SWCNT which is uniaxially compressed in a direction perpendicular to the SWCNT axis. The present study established that the temperature, pore size, pore topology, hydrophobicity, and pore shape have significant effects on the properties of confined water. The results provide information that is helpful not only for the design of high performance nanofluidic devices but also for further studies into the unsolved properties of bulk water.

Non-Hermitian topology attracts broad interests in condensed matter physics as it induces novel phenomena. A prime example is exceptional points where the non-Hermiticity violates diagonalizability of the Hamiltonian. Here, we report a novel type of exceptional points arises from interplay between symmetry and non-Hermiticity: symmetry-protected exceptional rings and symmetry-protected exceptional surfaces. We also exemplify the emergence of the symmetry-protected exceptional points, rings, and surfaces for two distinct systems: strongly correlated fermions and spring-mass models governed by the Newton equation.

The probability number distribution function of binary black hole mergers observed by LIGO/ Virgo has double peaks as a function of primary black hole mass. binary black hole which are formed from Population III binaries are consistent with high mass peak of binary black hole mergers observed by LIGO/ Virgo.

We have investigated current induced nonlinear topological transport phenomena in a non-magnetic layered organic conductor α-(BEDT-TTF)₂I₃ . First, we experimentally demonstrated that the “weak charge order state” of α-(BEDT-TTF)₂I₃ is a 2D massive Dirac fermion system, which is the simplest system with a finite Berry curvature dipole. Next, we discussed the possible nonlinear anomalous Hall effect due to the Berry curvature dipole in this system. Furthermore, we predicted the nonlinear anomalous Ettingshausen effect, which is the thermoelectric analogue. Finally, we experimentally confirmed the emergence of the nonlinear anomalous Hall effect in the weak charge order state of α-(BEDT-TTF)₂I₃ . This is the first observation of topological transport in organic conductors.