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Noise-Driven Universal Dynamics towards an Infinite Temperature State.

Jie Ren1,2, Qiaoyi Li3, Wei Li3

  • 1Department of Physics and Jiangsu Laboratory of Advanced Functional Material, Changshu Institute of Technology, Changshu 215500, China.

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Summary
This summary is machine-generated.

Even complex quantum magnetic models show universal relaxation dynamics towards a featureless infinite temperature state. This quantum dynamics is independent of specific system details, offering insights into universal behavior.

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Area of Science:

  • Quantum physics
  • Statistical mechanics
  • Condensed matter theory

Background:

  • Dynamical universality describes system-independent universal behavior in dynamical properties.
  • Understanding relaxation dynamics is crucial for characterizing complex quantum systems.

Purpose of the Study:

  • To investigate the longtime dynamics and relaxation behavior of a one-dimensional noisy quantum magnetic model.
  • To explore how various factors influence quantum dynamics and universality.

Main Methods:

  • Analysis of a one-dimensional noisy quantum magnetic model.
  • Study of longtime dynamics, including relaxation towards an infinite temperature state.
  • Examination of mode-coupling mechanisms (potential, disorder, interaction) and conservation laws.

Main Results:

  • The system relaxes towards an infinite temperature state, a featureless state.
  • The relaxation dynamics are found to be nontrivial and exhibit universal behavior.
  • The influence of external potential, disorder, interactions, and conservation laws on dynamics was assessed.

Conclusions:

  • The study reveals nontrivial and universal relaxation dynamics in a quantum magnetic model.
  • Findings highlight the robustness of dynamical universality even in systems driven to infinite temperature.
  • The results have relevance for ongoing ultracold atomic experiments.