Abstract.
A strong rise of E0 transition strengths between the first excited 0+ state and the ground state is predicted in shape transitional regions within the Interacting Boson Model (IBM). This rise matches well existing data and is not connected to a large mixing amplitude between both states. Moreover, a coherence of amplitudes in the wave functions causes the strong transition, without a requirement of explicit mixing of normal and intruder configurations.
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Werner, V., von Brentano, P., Casten, R.F. et al. Alternative interpretation of E0 strengths in transitional regions. Eur. Phys. J. A 25 (Suppl 1), 455–456 (2005). https://doi.org/10.1140/epjad/i2005-06-092-2
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DOI: https://doi.org/10.1140/epjad/i2005-06-092-2