Quantum scars and bulk coherence in a symmetry-protected topological phase

@article{Jeyaretnam2021QuantumSA,
  title={Quantum scars and bulk coherence in a symmetry-protected topological phase},
  author={Jared Jeyaretnam and Jonas Richter and Arijeet Pal},
  journal={Physical Review B},
  year={2021}
}
Formation of quantum scars in many-body systems provides a novel mechanism for enhancing coherence of weakly entangled states. At the same time, coherence of edge modes in certain symmetry protected topological (SPT) phases can persist away from the ground state. In this work we show the existence of many-body scars and their implications on bulk coherence in such an SPT phase. To this end, we study the eigenstate properties and the dynamics of an interacting spin-$1/2$ chain with three-site… Expand
1 Citations
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