| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
Low-dimensional quantum many-body systems with frustration and randomness were studied. We investigated frustrated quantum spin systems in various two-dimensional lattices and two-leg ladder lattice, and showed that several novel quantum states including the spin-nematic and vector-chirality states emerged in those systems. We also proposed an improvement of the tensor-network strong-disorder renormalization group (tSDRG) method. Applying the improved tSDRG algorithm to quantum spin systems with quenched randomness in one- and two-dimensional lattices, we showed that the algorithm was able to achieve an accurate calculation of various quantities in the ground state of those systems.
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