Research Interests

(i) Quantum Field Theories
(ii) High Energy Physics Phenomenology
(iii) Gravity and String Theories
(iv) Synchronization of Chaotic Elements, Energy Harvesting, Quantum Chaos

The research area of my laboratory is wide and I welcome a student who studies with enthusiasm his/her own subject under close interaction with colleagues, including myself. 
I have been happy having wonderful colleagues with whom I have discussed physics in depth. To mention a few (let me omit their titles for brevity), I am indebted to Tohru Eguchi and Masataka Fukugita (my senior colleagues), Hironari Miyasawa and Keiji Igi (my professors) –all were at University of Tokyo where I graduated−Alan D. Martin at University of Durham, and Wolfgang Ochs at Max-Planck Institute, München; I have worked with them in strong interaction phenomenology. I have also contributed to Reviews of Particle Properties (particle search section including Higgs, supersymmetric partners, WIMPs (the dark matter), and so on) during 1979-1986. At Berkeley (LBL) Tom Trippe was my good friend. We prepared together a standard model table including CKM parameters to go to Review of Particle Properties and PDG booklets.
I have worked also in various aspects of quantum field theories: firstly, axial-vector anomaly analysis at short distances with my mentor, Masao Yamada, affine Toda field theories with Yoshihiro Saitoh, Higgs signatures with Bob Kelly, and electroweak radiative corrections in KEK radiative correction group including Yoshimitsu Shimizu and Nobuya Nakazawa. In particular, my favourite work in string theories is a paper with Zvi Bern and David Dunbar, which asserts (perturbatively) Gravity = QCD ² based on KLT relation. ― Recently this point has been further explored in great depth, and it has been almost verified that N= 8 supergravity is a double copy of N = 4 super Yang-Mills theory. 
In parallel, I have worked in chaos physics for these years since I came to know of the beautiful universality in chaos thanks to Patrick Crehan. In this area I have enjoyed collaboration with many students, in particular, Hayato Fujigaki, Kengo Kikuchi, Syou Tsukada, and Takanobu Moriya, Keita Sumiya, Hisakazu Uchiyama; in particular, with Kazuhiro Kubo, I have extended my chaos work to the anisotropic Kepler problem, which is a most basic research field for quantum chaos. I refer you to my publication list to see how these people have admirably contributed.

Selected Publications

I. Quantum Field Theories

1. N. Nakazawa, T. Shimada and M. Yamada, “Anomalies, Short-Distance Behavior and Radiative Correction to  Decay”, Prog. Theor. Phys. 51, 1932, (1974).
   T. Shimada, “Reactions e^-e⁺→V→γX and e^-e⁺→V→l^-l⁺X and discriminating between a Higgs particle and a pseudo-Goldstone boson”, Phys. Rev. D25, 56-60, (1982).
   M. Igarashi, N. Nakazawa, T. Shimada and Y. Shimizu, “Electroweak corrections to muon pair production in electron - positron annihilation at high-energy”, Nucl. Phys. B263, 347, (1986).
II. Theory of Hadronic Interactions

2. T. Eguchi, T. Shimada and M. Fukugita, “Poles and zeros in ππ scattering amplitudes”, Nucl. Phys. B74, 102, (1974).
   T. Shimada, “Study of the ambiguity problem in ππ phase shift analysis”, Prog. Theor. Phys 54, 758, (1975).
   T. Shimada, A.D. Martin and A.C. Irving, “Double Regge Exchange Phenomenology”, Nucl. Phys. B142, 344, (1978).
   W. Ochs and T. Shimada, “The correlation between charge and energy flow within cascade models for quark and hadron jets”, Z. Phys. C4, 141, (1980).
   W. Ochs and T. Shimada, “Born term for high-energy meson hadron collisions from QCD and chiral quark model”, Phys. Lett. B215, 757, (1988).
   W. Ochs and T. Shimada, “Multi-jet events in soft and semihard hadronic collisions”, Z. Phys. C49, 325-336, (1991).
III. Gravitation and String Theories

3. D. Hochberg and T. Shimada, “Ambiguity in determining the effective action for string corrected Einstein gravity”, Prog. Theor. Phys.78, 680, (1987).
   Z. Bern, T. Shimada and D. Hochberg, “Incompatibility of torsion with the Gauss-Bonnet combination in the bosonic string”, Phys. Lett. B191, 267, (1987).
   Y. Saitoh and T. Shimada，“Note on the stability in ADE affine Toda field theories”, Phys. Lett. B280, 227-231, (1992).
   Z. Bern, D. C. Dunbar and T. Shimada, “String based methods in perturbative gravity”, Phys. Lett. B312, 277-284, (1993).
IV. Synchronization of Chaos and Quantum Chaos

4. H. Fujigaki and T. Shimada, “Phase synchronization and nonlinearity decision in the network of chaotic flows”, Phys. Rev. E55, 2426-2433, (1997).
   T. Shimada and K. Kikuchi, “Periodicity manifestations in the turbulent regime of the globally coupled map lattice”, Phys. Rev. E62, 3489, (2000).
   T. Shimada and S. Tsukada, “Periodicity manifestations in the non-locally coupled maps”, Physica D: nonlinear phenomena, 168-169, 126-135, (2002).
   K. Kubo and T. Shimada, “AKP energy levels by a simple shooting scheme for a periodic orbit”, Artificial Life and Robotics 14, 557-561, (2009).
   K. Kubo and T. Shimada, Anisotropic Kepler Problem and Critical Level Statistics, in Theoretical Concepts of Quantum Mechanics, pp. 81-106, ed. M. R. (ISBN: 979 - 953-307-51-0088-1), InTech (2012).

CV

1976	D. SC., Department of Physics, University of Tokyo, Tokyo, Japan
1976–1979	Senior Research Assistant, Department of Physics, University of Durham, United Kingdom
1979–1980	Post Doctoral Research Associate, Max-Planck Institut fuer Physik, Muenchen, Germany
1980–1981	Post Doctoral Research Associate, Lawrence Berkeley Lab, Berkeley, USA.
1981–1983	Lecturer of Physics, Meiji University
1983–1988	Associate Professor of Physics, Meiji University
1988 to date, Professor of Physics, Department of Physics, School of Science and Technology, Meiji University
1986–1987	Visiting Professor, Niels Bohr Institute, Copenhagen, Denmark
1987–1988	Visiting Professor (AvH Fellow), Max-Planck Institute, München, Germany
1990–1995	Temporary lecturer, University of Tokyo (Physics)
1988–2005	Temporary lecturer, Tokyo Institute of Technology (Mathematical Physics)
2002–2003	Visiting Professor, Tokyo Institute of Technology. Visiting Professor, Niels Bohr Institute, Copenhagen, Denmark

Professional Experience

Member of Editorial Board, ISRN applied mathematics (http://www.isrn.com/journals/appmath/).
Member of International Editorial Reviewer Board, Artificial Intelligence Research (http://www.sciedu.ca/air).
Journal Referee:
Physics Letters A (Elsevier)
International Journal of Modern Physics (World Science)
Progress of Theoretical Physics (Yukawa Institute for Theoretical Physics and Physical Society of Japan).

Ph. D. Doctors (Science) graduated from our group

Kengo Kikuchi, Chaos and Order, 2001.
Kazuhiro Kubo, Quantum Chaos in the anisotropic Kepler problem―as a contact point between the periodic orbit theory and the random matrix theory, 2010
Takanobu Moriya, Globally Coupled Nonlinear Elements―Globally Coupled Flows and Globally Coupled Maps, 2011

Corabolative Lecture Course and seminars:

We have had a privilege to invite a distinguished lecturer annually to give an extensive lectures. Professor Jiro Arafune has told us monopole physics and neutrino physics.
Then, Professor Norisuke Sakai has given an extensive lectures on supersymmetries, BPS and domain wall junctions for the year 2011 and 2012.
In addition we have seminars inviting people who have achieved stimulus works. Recent examples are Dr. Tsukasa Tada, and Satoshi Okazaki, Yutaka Ookouchi.