Hi, in the book 'Introduction to Quantum Mechanics' by Griffiths, on page 71 in the section 'The Delta-Function Potential' he states that the general solution to time independent Schrodinger Equation is $$\psi(x) = Ae^{-\kappa x} + B e^{\kappa x}$$(adsbygoogle = window.adsbygoogle || []).push({});

he then notes that the first term blows up as $$x \to -\infty,$$ so we must choose $$A=0.$$ Why is it that we are rejecting a wave function that goes to infinity? Is it simply because we are looking for normalizable solutions?

Thanks.

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# I Delta fuction potential general solution

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