【直播】【山西大学理论物理所】上海交大蔡子研究员:Symmetry-protected-topological edge...
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本系列报告由山西大学理论物理研究所主办,2021年6月23日10:00开始,授权蔻享学术进行网络直播。
Symmetry-protected-topological edge modes in open quantum many-body systems
--- an emergent partial time-reversal symmetry breaking
报告人
蔡子 研究员(上海交通大学)
时间
2021年6月23日 10:00
Symmetry-protected topological edge modes are one of the most remarkable phenomena in topological physics. In this talk, we formulate and quantitatively examine the effect of a quantum bath on these topological edge modes. Using the density matrix renormalization group method, we study the ground state of a composite system of spin-1 quantum chain, where the system and the bath degrees of freedom are treated on the same footing. We focus on the dependence of these edge modes on the global/partial symmetries of system-bath coupling and on the features of the quantum bath. It is shown that the time-reversal symmetry(TRS) plays a special role for an open quantum system, where an emergent partial TRS breaking will resut in a TRS-protected topological mode diffusing from the system edge into the bath, thus make it useless for quantum computation.
报告人简介
编辑:黄琦
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