We study Theoretical Condensed Matter Physics. Especially, we are interested in
Superconductivity
Quantum criticality
Dirac electrons
Heavy fermions
Topological systems
Quantum magnets
Spin liquids
Each field is huge and contains a lot of sub fields. So, my research extends from experiment-oriented studies to theory-oriented studies, where use is made of various theoretical methods including analytic calculations and numerical simulations depending on the problem we are interested in.
For example, we have studied the problems explained in the following Japanese reviews.
多田靖啓, 「カイラル超流動体における軌道角運動量は何によって定まるか？」, 日本物理学会誌, 第74巻 第2号 93-97, 2019. (PDF file)
多田靖啓, 「量子臨界点近傍の超伝導」, 研究会講義資料 2009. (PDF file)