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First application of the continuum-QRPA to description of the double beta decay

Vadim Rodin·Amand Faessler
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Abstract

A continuum-QRPA approach to calculation of the $2νββ$- and $0νββ$-amplitudes has been formulated. For $^{130}$Te a regular suppression (about 20%) of the high-multipole contributions to the $0νββ$-amplitude has been found which can be associated with additional ground state correlations appearing from the transitions to collective states in the continuum. At the same time the total calculated $0νββ$-amplitude for $^{130}$Te gets suppressed by about 20% as compared to the result of the usual, discretized, QRPA.

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Vadim Rodin, Amand Faessler. 2006-02-01. First application of the continuum-QRPA to description of the double beta decay. https://doi.org/10.1016/j.ppnp.2006.01.007

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