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I would like to ask a question regarding this Hamiltonian that I encountered. The form is H = Aa^+a + B(a^+ + a). Then there is this question asking for the eigenvalues and ground state wavefunction in the coordinate basis. The only given conditions are, the commutator of a^+ and a is [a^+,a] = 1, and that A > 0 and B are c-number constants. I actually do not understand the meaning of c-number constants. Can anyone suggest how to attack this problem?

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# Eigenvalues and ground state eigenfunction of a weird Hamiltonian

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