任意大耦合的广义行波近似
Generalized rotating-wave approximation for arbitrarily large coupling
摘要：
本文给出了单模自旋玻色子哈密顿量的广义行波近似。它示出，执行一个简单的基础的变化之前，消除非共振项的结果在一个显着更准确的表达系统的能级。广义近似适用于耦合强度的所有值和广泛的失谐值，并可能在固态实验中找到应用。
英文摘要：
A generalized version of the rotating-wave approximation for the single-mode spin-boson Hamiltonian is presented. It is shown that performing a simple change of basis prior to eliminating the off-resonant terms results in a significantly more accurate expression for the energy levels of the system. The generalized approximation works for all values of the coupling strength and for a wide range of detuning values, and may find applications in solid-state experiments.
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