Effective field theory for triaxially deformed nuclei

Abstract

Effective field theory (EFT) is generalized to investigate the rotational motion of triaxially deformed even-even nuclei. A Hamiltonian, called the triaxial rotor model (TRM), is obtained up to next-to-leading order (NLO) within the EFT formalism. Its applicability is examined by comparing with a five-dimensional collective Hamiltonian (5DCH) for the description of the energy spectra of the ground state and $\gamma$ band in Ru isotopes. It is found that by taking into account the NLO corrections, the ground state band in the whole spin region and the $\gamma$ band in the low spin region are well described. The results presented here indicate that it should be possible to further generalize the EFT to triaxial nuclei with odd mass number.

21 pages, 9 figures

References in corpus (7)

• New parametrization for the nuclear covariant energy density functional with point-coupling interaction
• Three-body forces: From cold atoms to nuclei
• Using effective field theory to analyse low-energy Compton scattering data from protons and light nuclei
• Effective theory for deformed nuclei
• An efficient method for computing the Thouless-Valatin inertia parameters
• Effective field theory for vibrations in odd-mass nuclei
• Rotational constants of multi-phonon bands in an effective theory for deformed nuclei

Cited by in corpus (1)

• Effective field theory of pairing rotations