Hi, guys, I do not know how to determine the Hamiltonian matrix of the following question with the basis of two stationary state. Pls give me some hints about it. Consider first a single Hydrogen atom, made up of a proton at some location A in space, and an electron. We assume that the electron is in a stationary state with an energy centered around the position of the nucleus. We will investigate the effect of introducing a second proton, at location B on the stationary states and the energy of the system.