Exact sum rules for inhomogeneous systems containing a zero mode |
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Authors: | Paolo Amore |
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Affiliation: | Facultad de Ciencias, CUICBAS, Universidad de Colima, Bernal Díaz del Castillo 340, Colima, Colima, Mexico |
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Abstract: | We show that the formulas for the sum rules for the eigenvalues of inhomogeneous systems that we have obtained in two recent papers are incomplete when the system contains a zero mode. We prove that there are finite contributions of the zero mode to the sum rules and we explicitly calculate the expressions for the sum rules of order one and two. The previous results for systems that do not contain a zero mode are unaffected. |
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Keywords: | Helmholtz equation Inhomogeneous system Sum rule |
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