A method to calculate effective Hamiltonians in quantum information<xref rid="cpb_28_11_110305_fn1" ref-type="fn">*</xref><fn id="cpb_28_11_110305_fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 11674059).</p></fn>

A method to calculate effective Hamiltonians in quantum information**

Project supported by the National Natural Science Foundation of China (Grant No. 11674059).

Ren Jun-Hang^{1, 2}, Ye Ming-Yong^{1, 2, †}, Lin Xiu-Min^{1, 2}

Demonstration of the eigenvalues of H₀ in Eq. (52).