Research Associate position in Prof. Masaki Oshikawa's research group in Quantum Materials Group, ISSP, University of Tokyo. We are looking for an outstanding junior theorist who is interested in condensed matter physics and statistical mechanics of quantum many-body systems, and related areas (field theory, quantum information, etc.) The successful candidate is expected to have fruitful collaborations with Prof. Oshikawa and group members (especially graduate students) in his group, but is also encouraged to pursue his/her own interest and develop collaborations with other groups within and outside ISSP.