| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
I published a monograph on the study of wild harmonic bundles and pure twistor D-modules. I introduced the concepts of mixed twistor structure and Betti structure on holonomic D-modules, and established their functoriality with respect to various standard operations. I applied the ideas and the results in the theory of wild harmonic bundles to the study of doubly periodic instantons and 2-dimensional Toda equations. I studied the asymptotic behaviour of doubly periodic instantons by regarding them as infinite dimensional harmonic bundles. On the basis of the result, I established that the Nahm transform give an equivalence between wild harmonic bundles on elliptic curve and doubly periodic instantons. As for the Toda equations, I observed an equivalence of solutions of the Toda equations and some type of harmonic bundles, which was useful for the classification of the solutions. I also computed the Stokes structure of the associated meromorphic flat bundles.
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