Boundary Condition, Topology, and Energy-Scale Deformation in Quantum Systems(Current Topics)

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Other Title
  • エネルギー・スケール変調による量子系の境界条件・トポロジーの制御(最近の研究から)
  • エネルギー・スケール変調による量子系の境界条件・トポロジーの制御
  • エネルギー ・ スケール ヘンチョウ ニ ヨル リョウシケイ ノ キョウカイ ジョウケン ・ トポロジー ノ セイギョ

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Abstract

Boundary condition and topology play a crucial role in determining the properties of quantum system. We report our recent finding that one can change the topology of the ground states of quantum critical systems by applying "sine-square deformation" which introduces a gradual modulation in local energy scale of the system but does not change the topology of the Hamiltonian. Implications of the result to several topics are also discussed.

Journal

  • Butsuri

    Butsuri 67 (6), 394-398, 2012-06-05

    The Physical Society of Japan

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