| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
The determination of three-nucleon forces, non-trivial interactions among three nucleons, is one of the most important subject in modern nuclear physics. In this study, we calculate three-nucleon forces directly based on QCD, the Standard Model of particle physics, by means of first-principles lattice QCD simulations.
Some of the major achievements are (1) development of a novel computational algorithm (Unified Contraction Algorithm) which speeds up the computation by a factor of 192 (2) establishing the theoretical definition of three-nucleon forces in field theory based on the asymptotic behavior of Nambu-Bethe-Salpeter wave functions for multi-particles (3) observation of the repulsive three-nucleon forces at short distance by lattice QCD simulations at various quark masses and lattice spacings.
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