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1 Correction to: Brazilian Journal of Physics (2021) 51:1324–1332 https://doi.org/10.1007/s13538-021-00916-5
In the original article there is an important step missing in Eq. (16). The step is important because students tend to think that the support A of the test function is extended to infinity. In fact, this is not so and what we have is merely a calculation of an integral, viz. Following is the corrected equation:
where in the last step we made the substitution \(\alpha x = y\).
In addition, following is the corrected Ref. 15:
15. S. De Vincenzo, C. Sánchez, Point interactions: boundary conditions or potentials with the Dirac delta function. Can. J. Phys. 88, 809 (2010).
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Amaku, M., Coutinho, F.A.B., Éboli, O.J.P. et al. Correction to: Some Problems with the Dirac Delta Function: Divergent Series in Physics. Braz J Phys 52, 76 (2022). https://doi.org/10.1007/s13538-022-01078-8
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DOI: https://doi.org/10.1007/s13538-022-01078-8