Degenerate Ground States and Multiple Bifurcations in a Two-Dimensional q-State Quantum Potts Model

来源 :第十八届全国凝聚态理论与统计物理学术会议 | 被引量 : 0次 | 上传用户：vitor330

【摘要】

：

We numerically investigate the two-dimensional q-state quantum Potts model on the infinite square lattice by using the infinite projected entangled-pair state (

【作者】

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Yan-Wei Dai Sam Young Cho Murray T.Batchelor Huan-Qiang Zhou

【机构】

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CentreforModernPhysicsandDepartmentofPhysics,ChongqingUniversity,ChinaCentreforModernPhysicsandDepar

【出处】

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第十八届全国凝聚态理论与统计物理学术会议

【发表日期】

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2014年7期

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We numerically investigate the two-dimensional q-state quantum Potts model on the infinite square lattice by using the infinite projected entangled-pair state (iPEPS) algorithm.We show that the quantum fidelity, defined as an overlap measurement between an arbitrary reference state and the iPEPS ground state of the system, can detect q-fold degenerate ground states for the Zq broken-symmetry phase.

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Degenerate Ground States and Multiple Bifurcations in a Two-Dimensional q-State Quantum Potts Model

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