It is generally accepted that the continuous spectrum can be detected by the presence of nonsquare integrable solutions. This is shown to be incorrect as a general principle. A method to determine the singularity of ’’eigenfunctions’’ corresponding to the continuous spectrum is presented.
No takes yet. Share an insight, caveat, or question.
Eliezer Hameiri (1981) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: