Screen LibraryDynamics of a quantum spin liquid /
This thesis presents an exact theoretical study of dynamical correlation functions in different phases of a two-dimensional quantum spin liquid. By calculating the dynamical spin structure factor and the Raman scattering cross section, this thesis shows that there are salient signatures--qualitative...
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| Main Authors: | |
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| Published: |
Springer,
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| Publisher Address: | Cham : |
| Publication Dates: | [2016] |
| Literature type: | Book |
| Language: | English |
| Series: |
Springer theses,
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| Subjects: | |
| Summary: |
This thesis presents an exact theoretical study of dynamical correlation functions in different phases of a two-dimensional quantum spin liquid. By calculating the dynamical spin structure factor and the Raman scattering cross section, this thesis shows that there are salient signatures--qualitative and quantitative--of the Majorana fermions and the gauge fluxes emerging as effective degrees of freedom in the exactly solvable Kitaev honeycomb lattice model. The model is a representative of a class of spin liquids with Majorana fermions coupled to Z2 gauge fields. The qualitative features of the response functions should therefore be characteristic for this broad class of topological states. |
| Item Description: | "Doctoral thesis accepted by the Max Planck Institute for the Physics of Complex Systems, Dresden, Germany." |
| Carrier Form: | xv, 140 pages : illustrations (some color) ; 24 cm. |
| Bibliography: | Includes bibliographical references. |
| ISBN: |
9783319239514 3319239511 |
| Index Number: | QC174 |
| CLC: | O413 |
| Call Number: | O413/K724 |
| Contents: | Introduction -- Kitaev's Honeycomb Lattice Model -- Dynamic Spin Correlations -- Mapping to a Quantum Quench -- Results for the Structure Error -- Non-Abelian Phase and the Effect of Disorder -- Raman Scattering -- Conclusion and Outlook -- Appendix A: Pfaffians from Path Integrals -- Appendix B: X-Ray Edge and Singular Integral Equations -- Appendix C: Exact Diagonalization of Four Dimers -- Appendix D: Calculation of Matrix Elements. |