Effect of time-odd mean fields on inertial parameters of the quadrupole collective Hamiltonian

Hinohara, Nobua and Li, Z. P. and Nakatsukasa, Takashi and Nikšić, Tamara and Vretenar, Dario (2012) Effect of time-odd mean fields on inertial parameters of the quadrupole collective Hamiltonian. Physical Review C, 85 (2). pp. 24323-14. ISSN 0556-2813

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Abstract

Most current implementations of the quadrupole collective Hamiltonian model do not include the contributions of time-odd mean fields to the moments of inertia and mass parameters (Thouless-Valatin dynamical rearrangement contributions). A hybrid model is introduced that allows a quantitative estimate of these contributions to the inertial functions of a five-dimensional collective Hamiltonian based on microscopic energy density functionals. Fully self-consistent constrained relativistic Hartree-Bogoliubov calculations of triaxial energy surfaces in the β−γ plane are used to determine the parameters of an equivalent pairing-plus-quadrupole (P+Q) Hamiltonian. This Hamiltonian is employed in constrained Hartree-Fock-Bogoliubov (CHFB) plus local quasiparticle random-phase approximation (LQRPA) calculation of the deformation-dependent corrections to the Inglis-Belyaev moments of inertia and cranking mass parameters. This hybrid model is used to evaluate the influence of time-odd mean fields on vibrational and rotational collective masses and investigate their effect on the low-energy collective excitation spectra and transition rates of γ-soft Xe and Ba nuclei.

Item Type: Article
Keywords: nuclear energy density functional, collective Hamiltonian model, moments of inertia, adiabatic time dependent Hartree-Fock
Date: February 2012
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2012) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191005-1010
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 03 Jun 2014 12:45
Last Modified: 23 Feb 2016 16:43
URI: http://digre.pmf.unizg.hr/id/eprint/2173

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