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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27447


    Title: Statistics of topologically constrained excitations in the two-dimensional dimer model
    Authors: Pang, Ning-ning;曾文哲;Tzeng, Wen-jer
    Contributors: 淡江大學物理學系
    Date: 2005-04
    Issue Date: 2009-12-31 10:09:24 (UTC+8)
    Publisher: 中華民國物理學會
    Abstract: The statistical distribution of the topologically constrained excitations in the close-packed dimer system on a finite planar square lattice is studied. The elementary excitations in the momentum space are shown to follow a generalized Fermi-Dirac distribution. In the projected momentum space, the excitations can be classified into various species of non-interacting superfermions, accompanied by certain statistical weights dependent on the momentum associated with each species. In a sufficiently large system, the excitations behave like semions in a certain intermediate temperature regime. Our results indicate that the statistics of quasi-particles may strongly depend on the way they are characterized.
    Relation: Chinese Journal of Physics=中國物理學刊 43(2),頁357-363
    Appears in Collections:[物理學系暨研究所] 期刊論文

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