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词汇 Rotating wave approximation
分类 英语词汇 英语翻译词典
释义

Rotating wave approximation

英语百科

Rotating wave approximation

The rotating wave approximation is an approximation used in atom optics and magnetic resonance. In this approximation, terms in a Hamiltonian which oscillate rapidly are neglected. This is a valid approximation when the applied electromagnetic radiation is near resonance with an atomic transition, and the intensity is low. Explicitly, terms in the Hamiltonians which oscillate with frequencies \omega_L+\omega_0 are neglected, while terms which oscillate with frequencies \omega_L-\omega_0 are kept, where  \omega_L is the light frequency and  \omega_0 is a transition frequency.

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