Quantum scarred eigenstates in a Rydberg atom chain: entanglement, breakdown of thermalization, and stability to perturbations

Understand

Recent realization of a kinetically-constrained chain of Rydberg atoms by Bernien et al.

• [Nature 551, 579 (2017)] resulted in the observation of unusual revivals in the many-body quantum dynamics.
• In our previous work [arXiv:1711.03528] such dynamics was attributed to the existence of "quantum scarred" eigenstates in the many-body spectrum of the experimentally realized model.
• Here we present a detailed study of the eigenstate properties of the same model.