https://scholars.lib.ntu.edu.tw/handle/123456789/606834
標題: | Excitation spectrum of spin-1 Kitaev spin liquids | 作者: | Chen Y.-H Genzor J Kim Y.B Kao Y.-J. YING-JER KAO |
關鍵字: | Ground state; Neutron scattering; Tensors; Transfer matrix method; Charge excitations; Excitation spectrum; Kitaev model; Majorana; Order parameter; Spectra's; Spin liquids; Spin-liquid phase; Symmetric tensors; Transfer matrixes; Excited states | 公開日期: | 2022 | 卷: | 105 | 期: | 6 | 來源出版物: | Physical Review B | 摘要: | We study the excitation spectrum of the spin-1 Kitaev model using the symmetric tensor network. By evaluating the virtual order parameters defined on the virtual Hilbert space in the tensor network formalism, we confirm the ground state is in a Formula Presented spin-liquid phase. Using the correspondence between the transfer matrix spectrum and low-lying excitations, we find that contrary to the dispersive Majorana excitation in the spin-1/2 case, the isotropic spin-1 Kitaev model has a dispersive bosonic charge excitation. The bottom of the gapped single-particle charge excitations is found at Formula Presented, with a corresponding correlation length of Formula Presented unit cells. The lower edge of the two-particle continuum, which is closely related to the dynamical structure factor measured in inelastic neutron scattering experiments, is obtained by extracting the excitations in the vacuum superselection sector in the anyon theory language. ?2022 American Physical Society |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124572140&doi=10.1103%2fPhysRevB.105.L060403&partnerID=40&md5=731ce9a0b426e8cd3f66141da2d19241 https://scholars.lib.ntu.edu.tw/handle/123456789/606834 |
ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.105.L060403 |
顯示於: | 物理學系 |
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