Researcher Database

（Last updated : 2020-09-25 18:59:05）

HIROTA KOKI

Department / Course College of Science and Engineering Department of Mathematical Sciences

Title / Position Assistant Professor

Academic background
1.	2019/03 Degree Acquisition	│ Ritsumeikan University Ph.D. (Science)
2.	～2019/03	Doctoral Program (2nd Semester) │ Advanced Mathematics and Physics │ Graduate School of Science and Engineering │ Ritsumeikan University │ Completed

Research activities
1.		Mathematical Society of Japan

Subject of research
1.	Spectral problems of non self adjoint Dirac operators

Present specialized field
Keyword：Exact WKB method, Semi-classical Analysis, Microlocal Analysis

Papers
1.	2017/10	Real eigenvalues of a non-self-adjoint perturbation of the self-adjoint Zakharov-Shabat operator │ Journal of Mathematical Physics │ 58 (10) (Sole-authored)

Academic conference presentation
1.	2018/12/20	Purely imaginary eigenvalues of the semiclassical Zakharov–Shabat operator
2.	2018/09/01	Real eigenvalues of the semiclassical Zakharov–Shabat operator with PT-like symmetry (The 1st Ritsumeikan-Sookmyung Mathematics Conference)
3.	2017/03/07	Real Eigenvalues of a Non-Self-Adjoint Perturbation of the Defocusing Zakharov-Shabat Operator (Himeji Conference on Partial Differential Equations)
4.	2016/07/05	Quantization condition for eigenvalues of Zakharov-Shabat operator (Lectures on Semi-Classical Analysis)