Research Activities 1991–2016

RIKEN Accel. Prog. Rep. 50 (2017)

Mathematical Physics Laboratory
K. Hashimoto ∗1,∗2
Mathematical Physics Laboratory, led by Associate
Chief Scientist Koji Hashimoto, has been in Nishina
Center for the period of April 2010–March 2015.
Here, we brieﬂy summarize the research achievements of the laboratory.

cepts of superstring theory have been applied to nuclear physics, elementary particle physics, condensed
matter physics, and cosmology. Obviously, these ﬁelds
are very diﬀerent subjects from the viewpoints of energy scales, tools, objectives, and goals. However, acommon mathematical structure can bridge diﬀerentsubjects. Our achievement is mostly on the relation
between hadron physics and gravity. One of the interesting outcomes was a generalization of the NambuGoldstone theorem found by Dr. Hidaka, one of ourmembers.1)
The idea of bridging diﬀerent subjects in science,
which is attempted in this laboratory, was in line withthe original idea of the foundation of RIKEN. The idea
was conﬁrmed to be successful and resulted in a number of interesting research papers. It became one ofthe origins of the iTHES project in RIKEN, and thelaboratory promoted young researchers to ﬁnd novel
opportunities in sciences.

• 74 published papers in international refereed journals, as well as 26 preprints and 9 proceedings• 9 workshops including several workshops withmore than 100 participants• 97 lab seminars
The laboratory consists of Koji Hashimoto, the headof the lab, and 17 post-doctoral researchers in total.
Among those, 4 post-doctoral researchers were promoted to permanent faculty positions in universities
and research institutes.
The Mathematical Physics Laboratory was formulated such that every member can go through various
subjects in theoretical physics by using the powerfulforce of mathematics. In particular, mathematical con-Reference1) Y. Hidaka, Phys. Rev. Lett. 110, 9, 091601 (2013).

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∗1∗2

Associate Chief Scientist of Mathematical Physics Laboratory (2010–2015)
Present address: Department of Physics, Osaka University

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