Main interest of mine may be:
how can we understand a strongly interacting system with large number of degrees of freedom?
This is actually the main theme of the statistical physics and perhaps of the condensed matter physics. Field theory, although it might appear as a totally different subject, also turns out to be very closely related to this question.
I don't like to separate a particular subfield of physics (or even physics from other branches of science.) I strongly believe that the important value of physics lies at the notion of universality among many apparently unrelated phenomena.
However, my actual research has been naturally limited to some particular topics. (not that I am not interested in other problems.) Mostly I have been working on quantum many-body problems, such as quantum spin systems and low-dimensional electron systems.
Sometimes I work on something rather abstract, which has no direct relevance to experiments. I do not think theoretical physics is just fitting (or predicting) experimental data. On the other hand, physics is certainly an attempt to understand real world. Nature is indeed deep and is often beyond imagination of mankind. And it's fun to play with experimental data and to talk with experimentalists.
Members(students, postdocs) of my group are free to pursue their own interests, although discussion within (and outside) the group is strongly encouraged.
Some of the pedagogical talks on my research and backgrounds:
This section is still under construction. Meanwhile, you could find
