## ABOUT US

The most elementary objects in nature, called "elementary particles", are described by the theory named as "quantum field theory". Quantum theory describes microscopic phenomena, where positions or speeds of particles are uncertain in general. In quantum field theory, the existence of particles is itself uncertain and the particles can emerge from the vacuum and can disappear too. In our Lab., we investigate the ways of analyzing quantum field theory and apply them to realistic phenomena in order to obtain deeper understanding of the nature. In particular, we attempt to understand "quark confinement" and "mass gap generation" which result in the formation of protons and neutrons by use of mathematical and computational methods.

## MESSAGE

All the phenomena obey certain natural laws. Everything is composed of atoms and subatomic subjects called elementary particles, whose behavior is determined by the law called quantum theory. On the other hand, the behavior of the stars and planets in the space is determined by the law called general relativity[Fig.1,2]. Physicists consider these two laws are actually different aspects of a single and unique law, which is called "Theory of everything". All the phenomena in nature could be described by such a theory of everything. One of the goals of physics is to find a universal law or equation behind phenomena, while the other goal is to find how this complicated world emerge from such a universal law. To achieve these goals, we study elementary particles[Fig.3] and quantum field theory.

## NEWS & TOPICS

- Jun Yumoto earned his Ph.D. in Science.(2024.3.22)
- Assoc. Prof. Misumi gave an invited seminar talk at SISSA, More on resurgence in quantum theory. (2024.3.13)
- Assoc. Prof. Misumi gave an invited plenary talk in the workshop at KEK, KEK Theory Workshop 2023. (2023.11.29)
- The co-authored paper by Jun Yumoto and Prof. Misumi "Equivalence of lattice operators and graph matrices" has been posted in arXiv(2023.11.19). It is published in "Progress of Theoretical and Experimental Physics"(2024.1.19)．
- Assoc. Prof. Misumi gave an invited talk in the workshop at TIT, Supersymmetry, Soliton and Resurgence. (2023.8.5)
- Assoc. Prof. Misumi's textbook, Quantum mechanics, has been published.(2023.4.25)
- Assoc. Prof. Misumi gave an invited talk in the workshop at OIST, Invitation to Recursion, Resurgence and Combinatorics. (2023.4.13)
- Jun Yumoto gave an invited talk in the workshop at Mainz University, Novel Lattice Fermions and their Suitability for High-Performance Computing and Perturbation Theory. (2023.3.7)
- Assoc. Prof. Misumi gave an invited talk in the workshop at Mainz University, Novel Lattice Fermions and their Suitability for High-Performance Computing and Perturbation Theory. (2023.3.6)
- The co-authored paper by Jun Yumoto and Prof. Misumi "New conjecture on species doubling of lattice fermions" has been posted in arXiv(2023.1.25). It has been published in "Progress of Theoretical and Experimental Physics" (2023.8.26).
- Assoc. Prof. Misumi gave an invited talk in the workshop at Cambridge University, Applicable resurgent asymptotics: Summary meeting(AR2W03). (2022.12.16)
- Assoc. Prof. Misumi gave an invited seminar at Osaka University, "Lattice fermions as spectral graphs -Toward a new theorem-". (2022.10.11)
- Assoc. Prof. Misumi gave a lecture "Introduction to Resurgence theory" at Ibaraki University. (2022.8.31)
- Jun Yumoto gave a talk in YITP-RIKEN-iTHEMS workshop at YITP of Kyoto University, Lattice QFT and continuum QFT. (2022.7.20)
- Assoc. Prof. Misumi gave an invited talk in YITP-RIKEN-iTHEMS workshop at YITP of Kyoto University, Lattice QFT and continuum QFT. (2022.7.19)
- Assoc. Prof. Misumi gave a seminar talk at Kyoto University, "Resurgence structure in large-N sigma models". (2022.7.15)
- The co-authored paper by Jun Yumoto and Prof. Misumi "Lattice fermions as spectral graphs" has been published in Journal of High Energy Physics. (2022.2.14)
- Assoc. Prof. Misumi's co-authored paper "Quantum phase transition and resurgence: Lessons from three-dimensional N=4 supersymmetric quantum electrodynamics" was selected as PTEP Editor's suggestion and JPS Hot Topics.(2021.11.25)
- Assoc. Prof. Misumi gave an invited talk in the international workshop at RIMS of Kyoto University, RIMS online workshop "Exact WKB Analysis, Microlocal Analysis, Painlevé Equations and Related Topic". (2021.10.12)
- Assoc. Prof. Misumi gave an invited talk in the workshop at Yukawa Institute of Kyoto University,Quantum chiral anomaly in periodically driven systems.(2021.08.03)
- Assoc. Prof. Misumi gave an invited talk in the international workshop at INI of Cambridge University, Applicable resurgent asymptotics: Summary meeting.(2021.06.17)
- Assoc. Prof. Misumi gave an invited talk at CORE-U of Hiroshima University, Study on non-perturbative physics by resurgence theory.(2021.05.16)
- Assoc. Prof. Misumi organized the international workshop at INI of Cambridge University, Applicable resurgent asymptotics: towards a universal theory. (2021.04.01)
- Assoc. Prof. Tatsuhiro Misumi arrived at his new post at Kindai University. (2021.04.01)

## Lab. PI

Associate Professor Tatsuhiro Misumi

Bachelor at The University of Tokyo．PhD at Kyoto University．PD at BNL. Assistant Prof. at Keio University. Junior Associate Prof. at Akita University. Associate Professor at Kindai University since 2021.

Details are found below.

Researchmap

Introduction of academic staff

Google scholar

iNSPIRES