2017.03.30(周四),10:30-11:15,旗山校区理工楼3-303,Daniel Braak 博士,学术讲座【 Hidden symmetry and exceptional states in quantum Rabi models】

时间:2017-03-28浏览:131

时间:2017.03.30(周四),10:30-11:15

地点:旗山校区理工楼3-303

主讲:Daniel Braak 博士

主办:物理与能源学院

专家简介: Daniel Braak 博士,Rabi模型严格解的发现者

报告摘要:The quantum Rabi model is integrable, because it possesses a discrete parity symmetry which allows to eliminate the qubit degree of freedom. Level degeneracies occur thus only between states of different parity. They correspond to quasi-exact solutions of the model. This so-called exceptional spectrum has peculiar features if the model contains more than one qubit. For a generalization with broken symmetry, the quasi-exact solutions are non-degenerate except for special values of the symmetry-breaking parameter, indicating a hidden symmetry in this model associated with Dirac cones in the spectral graph. I shall discuss these special features following a general introduction to the subject.

 

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