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    The Kitaev Model on Surfaces with Lattice Defects and of Higher Genus

    Brennan, John (2018) The Kitaev Model on Surfaces with Lattice Defects and of Higher Genus. PhD thesis, National University of Ireland Maynooth.

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    The quantum phase of a physical system is defined as its ground state. As examples of quantum phases we mention super uids, superconductors, Bose- Einstein condensates and quantum Hall states. Different phases of a system originate from the different ways a systems' constituents can be organised or, in other words, the different orders of the system. Landau had the insight that the difference between two phases can be attributed to the corresponding orders having different symmetries [1]. Also, the transition between phases can be associated with the breaking of symmetries. This insight led to Ginzburg and Landau describing orders using local order parameters and developing a general theory of phase transitions based on symmetry breaking. This theory was successful in describing a large number of observed phases of matter. However, phases of matter have been discovered which cannot be described using a local order parameter and Landau's theory of symmetry breaking known as topological phases.

    Item Type: Thesis (PhD)
    Keywords: The Kitaev Model; Surfaces; Lattice Defects; Higher Genus;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 10252
    Depositing User: IR eTheses
    Date Deposited: 28 Nov 2018 14:47
      Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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