The above three particles are important for the NN interactions, and those consist of "up" and "down" quarks. The theory between quarks is called quantum chromo dynamics (QCD). Therefore, the NN interaction should fundamentally be explained in terms of QCD. The problem is that QCD is for only the high energy regime (so useless for the interaction between protons, neutrons, etc.). The chiral effective field theory provides a connection between QCD and nuclear physics. The specific method is called chiral perturbation theory (ChPT). I developed the NN potential energy with ChPT.

• One of my future research goals is to develop applications to be extracted from the above research. (1) Medical physics: I want to investigate very low energy (about 50 ~ 150 MeV), which is used for the proton beam therapy, etc. The accuracy will benefit the future of nuclear medicine. (2) Solid state physics: I will focus on extending nuclear physics to future ideas of the materials science. It will contribute to constructing the innovative experimental designing. (3) Time-dependent models: This can be associated with the above ideas. I want to consider the scattering with a beam in nuclear states. It will be important to discuss interesting properties for beam physics.

• Another goal is to investigate the mathematical and computational properties of the nuclear potential. (1) Semi-classical analysis: The potential is highly non-linear (see the 2nd figure). Thus, to consider the semi-classical region, it will be a new topic (chaos in nuclear region). (2) Algorithm development: I also want to investigate some sensitivity of the potential since I didn't use higher order accuracy for the part of the program. I will develop this with different algorisms to seek better computational insights. (3) Other: I also want to develop the program with the neural network, fluid dynamical sense, and other new skills. It will be beneficial for the computational progress.

I would like to focus on following things:
(1) Selection of students: I will find the students who are curious, inquisitive, diligent, etc. and who will keep the attractiveness of my research activities.

(2) Group structure: I want to assemble one group of students with a range of experience, and another group of students who will continue in the group for several years. I also have to care about students' understanding of research, leadership development, research productivity, and mentoring time.

(3) Individual mentoring: I want to motivate students who show little independent initiative, encourage students who are frustrated by a project that fails, advise students of unrealistic expectations of research, and train students to maintain careful analyses and records.