Time-odd mean fields in covariant density functional theory: Rotating systems

Abstract

Time-odd mean fields (nuclear magnetism) and their impact on physical observables in rotating nuclei are studied in the framework of covariant density functional theory (CDFT). It is shown that they have profound effect on the dynamic and kinematic moments of inertia. Particle number, configuration and rotational frequency dependences of their impact on the moments of inertia have been analysed in a systematic way. Nuclear magnetism can also considerably modify the band crossing features such as crossing frequencies and the properties of the kinematic and dynamic moments of inertia in the band crossing region. The impact of time-odd mean fields on the moments of inertia in the regions away from band crossing only weakly depends on the relativistic mean field parametrization, reflecting good localization of the properties of time-odd mean fields in CDFT. The moments of inertia of normal-deformed nuclei considerably deviate from the rigid body value. On the contrary, superdeformed and hyperdeformed nuclei have the moments of inertia which are close to rigid body value. The structure of the currents in rotating frame, their microscopic origin and the relations to the moments of inertia have been systematically analysed. The phenomenon of signature separation in odd-odd nuclei, induced by time-odd mean fields, has been analysed in detail.

20 pages. 16 figures

References in corpus (4)

• Additivity of effective quadrupole moments and angular momentum alignments in the A~130 nuclei
• The Negele-Vautherin density matrix expansion applied to the Gogny force
• Hyperdeformation in the cranked relativistic mean field theory: the Z=40-58 part of nuclear chart
• Hyperdeformation in the Cd isotopes: a microscopic analysis

Cited by in corpus (31)

• Global performance of covariant energy density functionals: ground state observables of even-even nuclei and the estimate of theoretical uncertainties
• The limits of the nuclear landscape explored by the relativistic continuum Hatree-Bogoliubov theory
• Fission barriers in covariant density functional theory: extrapolation to superheavy nuclei
• Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: from light to superheavy nuclei
• Deformed relativistic Hartree-Bogoliubov theory in continuum with point coupling functional: examples of even-even Nd isotopes
• Effects of symmetry breaking in finite quantum systems
• Pairing and rotational properties of actinides and superheavy nuclei in covariant density functional theory
• Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals
• The tensor part of the Skyrme energy density functional. III. Time-odd terms at high spin
• Empirical pairing gaps, shell effects, and di-neutron spatial correlation in neutron-rich nuclei
• Effects of pairing, continuum, and deformation on particles in the classically forbidden regions for Mg isotopes
• From superdeformation to extreme deformation and clusterization in the N~Z nuclei of the A~40 mass region
• The propagation of statistical errors in covariant density functional theory: ground state observables and single-particle properties
• Three-dimensional mesh calculations for covariant density functional theory
• Optimized Dirac Woods-Saxon basis for covariant density functional theory
• Covariant density functional theory input for r-process simulations in actinides and superheavy nuclei: the ground state and fission properties
• Rotational excitations in rare-earth nuclei: a comparative study within three cranking models with different mean fields and the treatments of pairing correlations
• Yrast band of 109Ag described by tilted axis cranking covariant density functional theory with a separable pairing force
• Covariant Density Functional Theory with Localized Exchange Terms
• Magnetic rotations in 198Pb and 199Pb within covariant density functional theory with pairing correlations
• Effects of rotation and valence nucleons in molecular-like $\alpha$-chain nuclei
• From cluster structures to nuclear molecules: the role of nodal structure of the single-particle wave functions
• Description of 158Er at ultrahigh spin in nuclear density functional theory
• Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei
• Addressing spectroscopic quality of covariant density functional theory
• New high-spin structure and possible chirality in ${}^{109}$In
• Nucleon localization function in rotating nuclei
• Shell-model-like approach based on cranking covariant density functional theory with a separable pairing force
• Pseudospin Symmetry: Microscopic origin of the ground-state inversion in neutron-rich odd-A Cu isotopes
• Global study of separable pairing interaction in covariant density functional theory
• Clusterization aspects in the states of non-rotating and fast rotating nuclei