Scars have occurred in investigations for potential applications of Rydberg states to quantum computing, specifically acting as qubits for quantum simulation. The particles of the system in an alternating ground state -Rydberg state configuration continually entangled and disentangled rather than remaining entangled and undergoing thermalization. Systems of the same atoms prepared with other initial states did thermalize as expected. The researchers dubbed the phenomenon "quantum many-body scarring".