We have been working on pionic atoms to extract information
on the chiral symmetry of the vacuum at the nuclear density.
In the recent analysis, we evaluated the chiral condensate
at the normal nuclear density (arXiv: 2204.05568). In 2021,
we have conducted a new systematic measurement of pionic
atoms along the long chain of the Sn nuclei. I will report the
recent progress and the future...
The unprecedented observational data from compact object mergers in recent years have confirmed that the nucleosynthesis of heavy and super heavy nuclei can be considered to proceed via the rapid neutron capture or r-process. The r-process nucleosynthesis path is along highly unstable, exotic, and neutron-rich nuclei. Thus, it is not only the photo-dissociation and neutron capture cross...
A special class of white dwarfs violating the standard Chandrasekhar limit are right now a timely topic. These Super-Chandrasekhar objects could be understood as the progenitor of supernovae type Ia (SN Ia) and this is the main reason for their astrophysical interest. Some early studies tackled the possibility of white dwarfs surpassing the Chandrasekhar limit by means of magnetic fields. More...
In the context of an unstable state with more than a single decay channel, we present a novel and general formula for evaluating the decay probabilities in each open decay mode. We also discuss numerical examples in Quantum Mechanics (QM) and Quantum Field Theory (QFT). Just as for the survival probability p(t), these partial decay probabilities are also not exponential and their ratio turns...
