Dynamics of a Quantum Spin Liquid

• Main Author: Knolle, Johannes (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic eBook
• Language: English
• Published: Cham : Springer International Publishing : Imprint: Springer, 2016.
• Series: Springer Theses, Recognizing Outstanding Ph.D. Research,
• Subjects: Physics.; Quantum field theory.; String theory.; Superconductivity.; Superconductors.; Magnetism.; Magnetic materials.; Strongly Correlated Systems, Superconductivity.; Magnetism, Magnetic Materials.; Quantum Field Theories, String Theory.

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...

Table of 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.