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    學術報告

    學術活動

    學術報告
    09/13 2021 Colloquium
    • Title題目 Yang-Gaudin model: The essence of quantum many-body physics
    • Speaker報告人 管習文 研究員(中科院精密測量科學與技術創新研究院)
    • Date日期 2021年9月13日 15:00
    • Venue地點 6620會議室
    • Abstract摘要

        Using Bethe’s hypothesis, C. N. Yang exactly solved the one-dimensional (1D) delta-function interacting spin-1/2 Fermi gas with an arbitrary spinimbalance in 1967. At that time, using a different method, M. Gaudin solved the problem of interacting fermions for the spin-balanced case. Later, the 1D delta-function interacting fermions problem was named the Yang-Gaudin model. This model signi?cantly lays out a profound legacy of quantum integrability, where particles scatter without di?raction.

        In this talk, I will briefly review recent theoretical and experimental developments of the Yang-Gaudin model on a variety of quantum many-body phenomena, such as fractional excitations, collective motions of quasiparticles, Gruneisen magnetocaloric effect, spin incoherent liquids, Flde-Ferrell-LarkinOvchinnikov (FFLO)-like pairing correlation, universal thermodynamics, and quantum criticality, showing the essence of quantum many-body physics in both spin and charge degrees of freedom.

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