Wave functions for the Schwarzschild black hole interior

Using the Hamiltonian constraint derived by Ashtekar and Bojowald, we look for preclassical wave functions in the Schwarzschild interior. In particular, when solving this difference equation by separation of variables, an inequality is obtained relating the Immirzi parameter γ to the quantum ambiguity δ appearing in the model. This bound is violated when we use a natural value for δ based on loop quantum gravity together with a recent proposal for γ. We also present numerical solutions of the constraint.