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Rotating wave approximation and renormalized perturbation theory

Published 5 Nov 2023 in quant-ph and physics.optics | (2311.02670v1)

Abstract: The rotating wave approximation (RWA) plays a central role in the quantum dynamics of two-level systems. We derive corrections to the RWA using the renormalization group approach to asymptotic analysis. We study both the Rabi and Jaynes-Cummings models and compare our analytical results with numerical calculations.

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