Kazutoshi Ohta
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Kazutoshi Ohta has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Shinji Shimasaki
Department of Physics Graduate School of Science Osaka University 560-0043 Toyonaka Osaka Japan
2 shared publications - Asato Tsuchiya
Department of Physics Graduate School of Science Osaka University 560-0043 Toyonaka Osaka Japan
1 shared publication - Asato Tsuchiya
Shizuoka University
1 shared publication - Goro Ishiki
High Energy Accelerator Research Organization (KEK) 305-0801 Tsukuba Ibaraki Japan
1 shared publication - Goro Ishiki
Department of Physics Graduate School of Science Osaka University 560-0043 Toyonaka Osaka Japan
1 shared publication - Takaaki Ishii
Department of Physics Graduate School of Science Osaka University 560-0043 Toyonaka Osaka Japan
1 shared publication
Latest Publications
- Open Access
Two-Dimensional Gauge Theory and Matrix Model
We study a matrix model obtained by dimensionally reducing Chern-Simon theory on S^3. We find that the matrix integration is decomposed into sectors classified by the representation of SU(2). We show that the N-block sectors reproduce SU(N) Yang-Mills theory on S^2 as the matrix size goes to infinity.
Open AccessTwo-Dimensional Gauge Theory and Matrix Model
We study a matrix model obtained by dimensionally reducing Chern-Simon theory on S^3. We find that the matrix integration is decomposed into sectors classified by the representation of SU(2). We show that the N-block sectors reproduce SU(N) Yang-Mills theory on S^2 as the matrix size goes to infinity.
- Open Access
On relationships among Chern-Simons theory, BF theory and matrix model
Chern-Simons theory on a U(1) bundle over a Riemann surface \Sigma_g of genus g is dimensionally reduced to BF theory with a mass term, which is equivalent to the two-dimensional Yang-Mills on \Sigma_g. We show that the former is inversely obtained from the latter by the extended matrix T-duality developed in hep-th/0703021. For the case of g=0 (i.e. S^2), the U(1) bundle represents the lens space S^3/Z_p. We find that in this case both the Chern-Simons theory and the BF theory with the mass term are realized in a matrix model. We also construct Wilson loops in the matrix model that correspond to those in the Chern-Simons theory on S^3.
Open AccessOn relationships among Chern-Simons theory, BF theory and matrix model
Chern-Simons theory on a U(1) bundle over a Riemann surface \Sigma_g of genus g is dimensionally reduced to BF theory with a mass term, which is equivalent to the two-dimensional Yang-Mills on \Sigma_g. We show that the former is inversely obtained from the latter by the extended matrix T-duality developed in hep-th/0703021. For the case of g=0 (i.e. S^2), the U(1) bundle represents the lens space S^3/Z_p. We find that in this case both the Chern-Simons theory and the BF theory with the mass term are realized in a matrix model. We also construct Wilson loops in the matrix model that correspond to those in the Chern-Simons theory on S^3.