| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
The ground-state and finite-temperature properties of various types of diamond chains, frustrated Heisenberg ladders, frustrated ferromagnetic-antiferromagnetic alternating chains, and high spin Heisenberg chains are investigated by the numerical methods such as exact diagonalization, density matrix renormalization group, and thermal pure quantum state methods, in addition to the analytical methods such as field theoretical analyses and exact solutions. Among them, we have clarified how the exotic quantum phenomena such as the partial ferrimagnetic phase, Haldane and ferrimagnetic phases with spontaneous translational symmetry breakdown, and the successive topological quantum phase transitions are induced by frustration and how the exotic properties of these ground states are reflected in the finite temperature behaviors.
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