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The driven open quantum East model exhibits slow glassy dynamics and a hierarchy of metastable states. Its long-time behavior is classical, with coherent phases and a drive-dependent effective temperature.

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Area of Science:

  • Quantum physics
  • Statistical mechanics
  • Condensed matter theory

Background:

  • The classical East model displays slow glassy dynamics due to metastable states.
  • Open quantum systems can exhibit complex behaviors influenced by external drives and dissipation.

Purpose of the Study:

  • To investigate an open quantum generalization of the East model.
  • To analyze the emergence of metastability in driven open quantum systems.

Main Methods:

  • Application of the theory of classical metastability for open quantum systems.
  • Detailed analysis of the driven open quantum East model at low temperature and weak driving field.

Main Results:

  • The driven open quantum East model exhibits a hierarchy of classical metastabilities.
  • Long-time dynamics are effectively classical, mirroring the classical East model.
  • Metastable phases are coherent and possess a drive-dependent effective temperature.

Conclusions:

  • Open quantum systems can retain classical metastability features.
  • Coherent quantum effects modify classical metastable states in a driven system.