Abstract
Bulk properties, spectrum, and nuclear response of are investigated within the equation of motion phonon method, which generates an orthonormal basis of -phonon states () whose constituents are Tamm-Dancoff phonons. The basis is free of any contamination induced by the center-of-mass motion, in virtue of a procedure exploiting the singular value decomposition of rectangular matrices. A self-consistent calculation is performed within a space spanned by a basis of -phonon states up to using a potential derived from the chiral effective field theory. The Hartree-Fock single-particle states are obtained from a harmonic-oscillator space including all major shells up to . The calculation is exact up to , whereas the three-phonon () states are assumed to be composed of noninteracting and constituent phonons. It yields bulk and spectroscopic observables consistent with the available experimental data and provides an electric dipole response exhibiting distinctive signatures.
2 More- Received 5 May 2023
- Revised 6 July 2023
- Accepted 2 August 2023
DOI:https://doi.org/10.1103/PhysRevC.108.024316
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