Oshikawa, Masaki
Professor
solid state physics
University of Tokyo
Japan
Biography
Our main focus is quantum many-body theory. Based on the close correspondence among quantum many-body systems, classical statistical systems, and field theory, we pursue universal concepts in physics. At the same time, we aim to give a unified picture on experimental data and to make testable predictions. As an example of our recent achievements, we have given a certain theoretical result for the total orbital angular momentum of chiral superfluids, which has remained paradoxical for 40 years. We also demonstrated, based on anomaly in quantum field theory, a new classification of gapless quantum critical phases in the presence of a discrete symmetry. This opens up a new direction in classification of quantum phases. In order to connect these theoretical developments with experiments, we also study material design to realize exotic topological phases such as Kitaev spin liquids. Much of our research is carried out in international collaborations.
Research Interest
Electron Spin Resonance in quantum spin systems and itinerant electron systems Conduction at a junction of quantum wires and conformal field theory Topological phases and quantum entanglement Orbital angular momentum of chiral superfluids Realization of topological phases and topological phenomena in materials
Publications
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†Finite-size scaling of the Shannon-Rényi entropy in two-dimensional systems with spontaneously broken continuous symmetry: G. Misguich, V. Pasquier and M. Oshikawa, Phys. Rev. B 95 (2017) 195161.
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†Encoding orbital angular momentum of light in magnets: H. Fujita and M. Sato, Phys. Rev. B 96 (2017) 060407(R).
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†Capacity of entanglement and the distribution of density matrix eigenvalues in gapless systems: Y. O. Nakagawa and S. Furukawa, Phys. Rev. B 96 (2017) 205108.
