Consider the Spin Hamiltonian:Ĥ = -AOTwhere A E R is a non-negative real number. Use as a trial wave function:|&(0)) = cos(0/2) |+z) + sin(0/2) |−z)(a.) What is the exact ground state and exact ground state energy for this Hamiltonian?(b.) Using the trial wave function, calculate E(0), the energy as a function of the parameter 0.(c.) Using the variational principle, estimate the ground state energy. How good is your solution and why?

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Answered: Consider the Spin Hamiltonian: Ĥ = -Aox…

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