In case diatomic bond length is 0.1 and 2.0, same tendency is appeared as in case 0.7. <img src="https://assets.blueqat.com/public/uploads/us-east-2:62eba507-efdc-48b7-85a9-2f09d417847c/2021/02/06/Figadapt2vv.png"/>Fig. 1A The common logarithm of derivations of each variable derived by eq.(2)(blue line) and FDM(orange line) on ground, triplet, singlet and doubly excited state of hydrogen molecule for diatomic bond length r=0.1(Angstrom). <img src="https://assets.blueqat.com/public/uploads/us-east-2:62eba507-efdc-48b7-85a9-2f09d417847c/2021/02/06/Figadap4vv.png"/>Fig. 1B The common logarithm of derivations of each variable derived by eq.(2)(blue line) and FDM(orange line) on ground, triplet, singlet and doubly excited state of hydrogen molecule for diatomic bond length r=2.0(Angstrom).

Derivative of hamiltonian derived by Variational Quantum Eigensolver(VQE) method: Suppremental Information

Hikaru Wakaura