Electronic wave function anthracene

A friend asked us to predict what the UV spectrum of anthracene (see Fig. 2.1 ) looks like. One can predict any UV spectrum if one knows the electronic stationary states of the molecule. The only way to obtain such states and their energies is to solve the time-independent Schrodinger equation. Thus, one has to solve the equation for the Hamiltonian for anthracene, then find the ground (the lowest) and the excited stationary states. The energy differences of these states will tell us where (in the energy scale) to expect light absorption, then the wave functions will enable us to compute the intensity of this absorption. 

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