Rotating Wave Approximation

Niles

Hi

My teacher said that the rotating wave approximation (RWA) is a good approximation, when

1) ν_field >> δ (δ is the detuning between field and atom -- so this means near resonance)
2) ν_field >> Ω_Rabi (Ω_Rabi is the Rabi frequency -- so the field has to be weak)

Is there a physical way of seeing why these are the demands for the RWA?

Best,
Niles.

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Niles	Rotating Wave Approximation Hi My teacher said that the rotating wave approximation (RWA) is a good approximation, when 1) ν_field >> δ (δ is the detuning between field and atom -- so this means near resonance) 2) ν_field >> Ω_Rabi (Ω_Rabi is the Rabi frequency -- so the field has to be weak) Is there a physical way of seeing why these are the demands for the RWA? Best, Niles.