| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2019: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
Recently, Kitaev's spin liquid is attracting considerable attention as a platform to perform topological quantum computation. We succeeded in the derivation of exact dynamical magnetic correlation function of this system, which reflect the nature of elementary excitations of this system. On the basis of this exact solution, we derived the dynamical magnetic structure factor, which is essential to interpreting the neutron scattering experiments. We also addressed the hole Green's function, which is applicable to the local detection of non-Abelian anyon, a promising candidate of qubit for quantum computation. We further considered the quantum spin ice system, and developed a general methodology to describe its fractional excitations. We apply this method to address the dynamics of magnetic monopole excitation, and found a phenomenon, which we term as dimensional transmutation. We also found a new class of classical spin liquid emerges out of the attraction between like charges.
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