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By using the Hermitean representation of the complex coordinate method that recently has been developed, the 1S autoionization resonance of helium and its corresponding error estimates are calculated. The results obtained by the Hermitian representation of the complex coordinate method are in good agreement with previous results which were obtained solving the complex eigenvalue problem obtained within the conventional framework of the complex coordinate method.
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Froelich et al. (1984) studied this question.
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