Exact Solutions to the Quantum Rabi-Stark Model Within Tunable Coherent States
You-Fei Xie1,Qing-Hu Chen1,2,†(
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Fig. 4. (Color online) Energy spectrum as a function of $U$ for $\Delta=0.5$, $g=0.25$ (upper panel) and $g=0.75$ (low panel). Blue lines denote even parity and red lines odd parity. Insets show the corresponding enlarged views around the accumulation area.
