Yoritaka Iwata

J-GLOBAL         Last updated: Dec 2, 2019 at 10:30
Yoritaka Iwata
Kansai University
Faculty of Chemistry ,Materials and Bioengineering
Job title
Specially-appointed Associate Professor
Dr. Sci. (Physics)(The University of Tokyo), Dr. Inf. Sci. (Mathematics)(Osaka University)


My primary interest is the operator theory in association with the operator algebra. There are some papers treating the fundamental property of infinitesimal generators, groups, and semigroups. Much attention is paid to the commutation and the nonlinearity. Its relation to abstract evolution equations is studied.
From applicational point of view, I am interested in the nonlinear mathematics (e.g., soliton property) in sub-atomic physics. Neutrinoless double-beta decay is also studied. This study is associated with clarifying the fundamental property of neutrinos such as Majorana or Dirac neutrino nature.

*** Publication Highlights (refereed papers: almost 50) ***
As the first author, for example, I have representative publications in the following academic journals
[Math] "Methods Funct. Anal. Topology" (2 papers) ...
[Phys] "Phys. Rev. Lett." (2 papers), "New J. Phys." (1 paper) ...

What's new


Research Areas



Apr 1996
Mar 2000
Department of Applied Natural Science, Osaka University
Apr 2000
Mar 2005
Nonlinear Mathematical Science, Graduate School of Information Science and Technology, Osaka Unversity
Apr 2005
Mar 2008
Nuclear Theory, School of Science, The Unversity of Tokyo

Academic & Professional Experience

Apr 2019
Specially-appointed Associate Professor, Faculty of Chemistry, Materials and Bioengineering, Kansai University
Apr 2016
Mar 2019
Research Fellow, Institute of Innovative Research, Tokyo Institute of Technology
[FY2018] Lecturer (Physics), Senshu University
Jan 2013
Mar 2016
Specially-Appointed Assistant Professor, Graduate School of Science, The University of Tokyo
Apr 2009
Dec 2012
EMMI Fellow, GSI Helmholtz Center, Germany
Apr 2007
Mar 2009
JSPS Fellow, University of Tokyo, Japan
Apr 2006
Mar 2007
21st Century COE Research Assistant, University of Tokyo, Japan
[additional] Lecturer (Mathematics), Shibaura Institute of Technology
[additonal] Lecturer (Physics), Kanagawa Institute of Technology
Guest Lecturer, Heian Jogakuin University
Guest Professor, Yanbian University (China)

Committee Memberships

Dec 2017
Editor, American Research Journal of Mathematics
Dec 2017
Editor, American Research Journal of Physics
Jan 2013
Editor of Journal of Basic and Applied Physics (JBAP)
Jul 2016
Scientific Secretary, Tsubame Lounge Seminar Series, Tokyo Institute of Technology
Sep 2019
Coordinator, Kansai University ”In-experimental-labo Seminar Series [Mathematics & Physics]”

Awards & Honors

Computation Science CG award (Atomic Energy Society of Japan)
"Development of spectral-method-based high precision numerical scheme for nonlinear Klein-Gordon equations"
"Incentive Award" FY2016, Computational Science and Engineering Division, Atomic Energy Society of Japan
Albert Nelson Marquis Award

Published Papers

Yoritaka Iwata
[Invited] to be published in Adv. Math. Phys. Special Issue "Mathematical Foundations of Quantum Mechanics and Quantum Field Theories"; arXiv:1907.08767      2019   [Invited]
Yoritaka Iwata, Paul Stevenson
New J. Phys. 21 (2019) 043010      2019
Yoritaka Iwata
Methods Funct. Anal. Topology 25 (2019), no. 2, 142-151      2019
Yoritaka Iwata
J. Phys: Conf. Ser. 1194 (2019) 012053      2019
J. Terasaki, Y. Iwata
AIP Conference Proceedings 2165, 020027 (2019)      2019
A systematic TDDFT data for nuclear fission analysis - Z=120 isotopes -
Takashi Nishikawa, Yoritaka Iwata, and Satoshi Chiba
Proceedings of the International Symposium on Exotic Nuclei EXON-2018, edts Yu. E. Penionzhkevich and Yu. G. Sobolev, World Scientific   220-226   2018
ISBN 978-981-120-944-4
Takashi Nishikawa, Yoritaka Iwata, and Satoshi Chiba
JAEA-Conf 2019-001, 147-150      2019
Kun Ratha Kean, Takashi Nishikawa, Yoritaka Iwata, Satoshi Chiba
JAEA-Conf 2019-001, 157-159      2019
Finite-dimensional representation of infnite-dimensional dynamical systems
Yoritaka Iwata, Yausuhiro Takei
to appear in Springer Conf. Proc. (AMMCS 2019)      2019
K. Kean, T. Nishikawa, Y. Iwata
to appear in JPS Conf. Proc.; arXiv:1908.00400      2019
Numerical scheme based on the spectral method for calculating nonlinear hyperbolic evolution equations
Yoritaka Iwata, Yausuhiro Takei
to appear in Proc. ICCMS 2020      2019
Pawel Danielewicz, Hao Lin, Jirina R. Stone, Yoritaka Iwata
under submission      2019
Many-body force effect on the fission barrier height
K. Kean, Y. Iwata, S. Chiba
under submission      2019
Takashi Nishikawa, Yoritaka Iwata, and Satoshi Chiba
CERN-Proceedings-2019-001, 165      2018
T. Nishikawa, Y. Iwata, S. Chiba
JAEA-Conf 2018-001   151-155   2018
K. Kean, Y. Iwata (8/10) et al.
JAEA-Conf 2018-001   169-174   2018
Yoritaka Iwata
J. Phys.: Conf. Ser. 965 (2018) 012022      2018
Yoritaka Iwata
Journal of Applied Mathematics and Physics 5 (2017) 822- 830      2017
(Conference-Proceedings article of "ISCAM 2017")

Books etc

Frontiers in Nuclear and Particle Physics II "Progress of time-dependent nuclear reaction theory"
Edited by Yoritaka Iwata
Bentham Science Publishers   2019   ISBN:978-1-68108-765-8
Authors: Y. Aritomo (Kindai), W. Cassing (Giessen), A. Diaz-Torres (Surrey), N. Itagaki (Kyoto), M. Kimura (Hokkaido), D. Lacroix (Orsay), P. Magierski (Warsaw), T. Maruyama (JAEA), V. E. Oberacker (Vanderbilt), A. Ono (Tohoku), K. Sekizawa (Niiga...
Chapter "Linear chain structure in light nuclei"
N. Itagaki, T. Ichikawa, Y. Iwata, P. W. Zhao
Frontiers in Nuclear and Particle Physics II "Progress of time-dependent nuclear reaction theory", Bentham Science Publishers   2019   
DOI: 10.2174/97816810876411190201
eISBN: 978-1-68108-764-1, 2019
ISBN: 978-1-68108-765-8
ISSN: 2589-7551 (Print)
ISSN: 2589-756X (Online)

Chapter "Energy density functional in nuclear physics"
Yoritaka Iwata, Joachim A. Maruhn
Book "Density Functional Theory: Principles, Applications and Analysis", Nova Publishers, New York   2013   ISBN:978-1-62417-955-6


A numerical scheme of nonlinear hyperbolic evolution equations based on the spectral method (in Japanese)
Yoritaka Iwata, Yasuhiro Takei
to appear in "神奈川工科大学 研究報告(紀要)第44号"      2019
Dissipative structure of femto-scale quantum finite-body systems (in Japanese)
Yoritaka Iwata, Takashi Nishikawa
to appear in "神奈川工科大学 研究報告(紀要)第44号"      2019
Yoritaka Iwata
"Frontiers in Nuclear and Particle Physics" edt. Yoritaka Iwata, Bentham Science, 2019      2019
Yoritaka Iwata
AESJ-CSED NEWSLETTER (No.29)      Mar 2018
Evolution operators without satisfying the semigroup property
Yoritaka Iwata
The Research Report of Shibaura Institute of Technology, Natural Sciences and Engineering Vol. 60, No.2, 29-32 (2016) (in Japanese)      2016

Conference Activities & Talks

Low-temperature solitonic core of compact stars
Yoritaka Iwata
The international workshop on nuclear physics for astrophysical phenomena, Tokyo Institute of Technology, Japan   Oct 2019   
Abstract hyperbolic evolution equations in Besov spaces
Yoritaka Iwata, Takahiro Noi
MSJ meeting, Kanazawa University, Japan   Sep 2019   
The nuclear transmutation of LLFP by means of the fast charge equilibration mechanism
Yoritaka Iwata, Takashi Nishikawa, Haoran Wang
AESJ Meeting, University of Toyama, Japan   Sep 2019   
[Talk at the special session] Finite-dimensional representation for infinite-dimensional dynamical system of nonlinear Klein-Gordon equations
Yoritaka Iwata, Yausuhiro Takei
AMMCS 2019, Waterloo, Canada   Aug 2019   
Yoritaka Iwata
AnMATH 2019, Budapest, Hungary   Aug 2019   
Reliability of QRPA approach to ββ and β decays
Jun Terasaki, Yoritaka Iwata
MEDEX 09 -Matrix Elements for the Double beta decay EXperiments-, Prague, Czech republic   May 2019   
Scientific aspect of economics and its education
T. Yamana, Y. Iwata, T. Chu, Biheng Li
The Japanese Society for Economic Education Annual meeting, Meiji University, Japan   Mar 2019   
Improvement of Skyrme-type effective nuclear interaction using experimental fission barrier height
Yoritaka Iwata, Kun Ratha Kean, Satoshi Chiba
AESJ meeting, Ibaraki University, Japan   Mar 2019   
Establishment of TDDFT+Langevin model
Takashi Nishikawa, Yoritaka Iwata, Satoshi Chiba
AESJ meeting, Ibaraki University, Japan   Mar 2019   
Abstract formulation of the Cole-Hopf transform
Yoritaka Iwata
MSJ meeting, Tokyo Institute of Technology, Japan   Mar 2019   

Social Contribution

[Editor, Informant]  Apr 2019
Yoritaka Iwata, Paul Stevenson,
“Conditional recovery of time-reversal symmetry in many nucleus systems”
New J. Phys. 21 (2019) 043010

Paul plays a role of the producer of movie.

[TV or radio appearance]  Radio Osaka (OBC)  Asa Katsu ! (Every Sunday Morning)  26 Aug 2018 - 16 Sep 2018
[Others]  ”Computational Science & Computiong” AESJ-CSED NEWSLETTER (No.28) August 2017  p.6  Aug 2017
[TV or radio appearance]  Radio Osaka (OBC)  Asa Katsu ! (Every Sunday Morning)  1 Sep 2017 - 30 Sep 2017


JPS meeting, session chair
2016 - Today
AESJ meeting, session chair
2019 - Today
a member of ICCMS 2020 (Brisbane, Australia) technical committee
; scheduled   Feb 2020
Seminar at Kyoto University (Department of Physics)
Nov 2019
Fundamentals of soliton theory and its application to many-nucleon systems
Special activity: Attending "The international industrial fair 2019 Kobe"
Sep 2019
Seminar at Institute of Innovative Research, Tokyo Institute of Technology
Dec 2016

Research Grants & Projects

FY2019 Scientific budjet "Neutrinoless double-β decay for determination of neutrino mass" (Y. Iwata, J. Terasaki)
Osaka University RCNP: CORE net
Project Year: Sep 2019 - Mar 2020    Investigator(s): Yoritaka Iwata
Project Year: Apr 2019 - Mar 2020    Investigator(s): Yoritaka Iwata
Project Year: Sep 2018 - Mar 2019    Investigator(s): Yoritaka Iwata
Computational Resorce, "Calculation of nuclear matrix elements of neutrinoless double-beta decay using QRPA", Center for Compt. Sci., Univ. Tsukuba (Y.Iwata, J. Terasaki)
Project Year: Apr 2018 - Mar 2019    Investigator(s): Yoritaka Iwata


Coodinator, ”Kansai University In-Experimental-Labo Seminar Series [Mathematics & Physics]”
[01] 22 09 2019,
Prof. Dr. Jirina Stone (Univ. Oxford & Univ. Tennessee, Knoxville)
"Quark-Meson-Coupling in Finite Nuclei and Nuclear Matter".

... Arranged by Y. Iwata, since 2019 ...
Vice-supervision of graduate students
[1] Doctor course student (07/2017-), Tokyo Institute of Technology, "Fission barrier height based on constrained Hartree-Fock calculations"

[2] Master course student (04/2016-), Tokyo Institute of Technology, "Microscopic friction coefficient deviated from time-dependent density functional theory"
Vice-supervision of graduate student 01