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Quantum Dissipative Continuous Time Crystals.

Felix Russo1, Thomas Pohl1

  • 1Vienna University of Technology (TU Wien), Institute for Theoretical Physics, Vienna, Austria.

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Researchers discovered two new continuous time crystal phases in interacting three-level particles. One phase requires beyond-mean-field effects, highlighting the role of correlations in these novel quantum phases.

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Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Non-equilibrium statistical mechanics

Background:

  • Continuous time crystals exhibit broken time-translational symmetry in open quantum systems.
  • Previous studies often relied on mean-field theory for understanding these phases.

Purpose of the Study:

  • Investigate time-crystal phases in a lattice of interacting three-level particles.
  • Explore phenomena beyond the scope of mean-field theory.

Main Methods:

  • Simulated dynamics of interacting three-level particles in a lattice.
  • Analyzed system behavior beyond mean-field approximations to capture correlations.

Main Results:

  • Identified two distinct continuous time-crystal phases.
  • One phase emerges exclusively due to correlations and beyond-mean-field effects.
  • Findings extend beyond classical nonlinear system dynamics.

Conclusions:

  • Demonstrated novel time-crystal phases in a dissipative quantum system.
  • Highlighted the critical role of correlations in emergent quantum phases.
  • Proposed model is experimentally relevant for neutral-atom arrays with Rydberg states.