A qubit-encoded (1+1)D Schwinger model simulation finds vacuum minima at theta-bar=0 and 2pi and shows relaxation to theta_eff=0 when coupled to a dynamical axion, realizing the Peccei-Quinn mechanism.
’t Hooft, Computation of the quantum ef- fects due to a four-dimensional pseudoparticle, Phys
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Quantum simulation of strong charge-parity violation and Peccei-Quinn mechanism
A qubit-encoded (1+1)D Schwinger model simulation finds vacuum minima at theta-bar=0 and 2pi and shows relaxation to theta_eff=0 when coupled to a dynamical axion, realizing the Peccei-Quinn mechanism.