Spin-isospin nuclear response using the existing microscopic Skyrme functionals

Abstract

Our paper aims at providing an answer to the question whether one can reliably describe the properties of the most important spin-isospin nuclear excitations, by using the available non-relativistic Skyrme energy functionals. Our method, which has been introduced in a previous publication devoted to the Isobaric Analog states, is the self-consistent Quasiparticle Random Phase Approximation (QRPA). The inclusion of pairing is instrumental for describing a number of experimentally measured spherical systems which are characterized by open shells. We discuss the effect of isoscalar and isovector pairing correlations. Based on the results for the Gamow-Teller resonance in ${}^{90}$Zr, in ${}^{208}$Pb and in few Sn isotopes, we draw definite conclusions on the performance of different Skyrme parametrizations, and we suggest improvements for future fits. We also use the spin-dipole resonance as a benchmark of our statements.

Submitted to Phys. Rev. C

References in corpus (20)

• Shape Coexistence and the Effective Nucleon-Nucleon Interaction
• Beta decay of r-process waiting-point nuclei in a self-consistent approach
• Spin-orbit splitting and the tensor component of the Skyrme interaction
• Gamow-Teller strength and the spin-isospin coupling constants of the Skyrme energy functional
• Quasiparticle random phase approximation based on the relativistic Hartree-Bogoliubov model II: Nuclear spin and isospin excitations
• Escape and Spreading Properties of Charge-Exchange Resonances in Bi 208
• Evolution of nuclear shells with the Skyrme density dependent interaction
• Shapes and beta decay in proton rich Ge, Se, Kr and Sr isotopes
• Beta decay and shape isomerism in 74Kr
• Determination of the Gamow-Teller Quenching Factor from Charge Exchange Reactions on 90Zr
• Spin-isospin excitations and beta+/EC half-lives of medium-mass deformed nuclei
• Beta-decay in odd-A and even-even proton-rich Kr isotopes
• The fully self-consistent quasiparticle random phase approximation and its application to the isobaric analog resonances
• Neutron Skin Thickness of 90Zr Determined By Charge Exchange Reactions
• beta-decay in neutron-deficient Hg, Pb, and Po isotopes
• Charge Exchange Spin-Dipole Excitations of 90Zr and 208Pb and Neutron Matter Equation of State
• Relativistic RPA for Isobaric Analogue and Gamow-Teller Resonances in Closed Shell Nuclei
• The Gamow-Teller Resonance in Finite Nuclei in the Relativistic Random Phase Approximation
• Chiral pion-nucleon dynamics in finite nuclei: spin-isospin excitations
• Rho-Nucleon Tensor Coupling and Charge-Exchange Resonances

Cited by in corpus (36)

• Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei
• One-quasiparticle States in the Nuclear Energy Density Functional Theory
• Spin-isospin resonances: A self-consistent covariant description
• Effect of Tensor Correlations on Gamow-Teller States in 90Zr and 208Pb
• Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations and $\beta$-decay half-lives
• Calculation of stellar electron-capture cross sections on nuclei based on microscopic Skyrme functionals
• Impact of tensor force on β-decay of magic and semi-magic nuclei
• Effects of the Tensor Force on the Multipole Response in Finite Nuclei
• The Gamow-Teller response within Skyrme random-phase approximation plus particle-vibration coupling
• The tensor part of the Skyrme energy density functional. III. Time-odd terms at high spin
• The unrestricted Skyrme-tensor time-dependent Hartree-Fock and its application to the nuclear response from spherical to triaxial nuclei
• Skyrme-Rpa Description of Spin-Flip M1 Giant Resonance
• Gamow-Teller response and its spreading mechanism in doubly magic nuclei
• Beta decay of deformed r-process nuclei near A = 80 and A= 160, including odd-A and odd-odd nuclei, with the Skyrme finite-amplitude method
• Isovector spin-singlet (T=1, S=0) and isoscalar spin-triplet (T=0, S=1) pairing interactions and spin-isospin response
• Influence of 2p-2h configurations on beta-decay rates
• Stellar weak decay rates in neutron-deficient medium-mass nuclei
• Quasi-particle random phase approximation with quasi-particle-vibration coupling: application to the Gamow-Teller response of the superfluid nucleus ${}^{120}$Sn
• Fragmentation of spin-dipole strength in ${}^{90}$Zr and ${}^{208}$Pb
• Role of T=0 pairing in Gamow-Teller states in N=Z nuclei
• Spin-flip M1 giant resonance as a challenge for Skyrme forces
• Spin-isospin response of deformed neutron-rich nuclei in a self-consistent Skyrme energy-density-functional approach
• Extended Skyrme interaction (II): ground state of nuclei and of nuclear matter
• Gamow-Teller excitations at finite temperature: Competition between pairing and temperature effects
• Extended Skyrme interaction (I): spin fluctuations in dense matter
• Nuclear charge-exchange excitations based on relativistic density-dependent point-coupling model
• Thermal QRPA with Skyrme interactions and supernova neutral-current neutrino-nucleus reactions
• Stellar electron capture rates based on finite temperature relativistic quasiparticle random-phase approximation
• Spin-isospin Response in Finite Nuclei from an Extended Skyrme Interaction
• Thermal quasiparticle random-phase approximation calculations of stellar electron capture rates with the Skyrme effective interaction
• Self-consistent continuum random-phase approximation with finite-range interactions for charge-exchange excitations
• Finite-temperature linear response theory based on relativistic Hartree Bogoliubov model with point-coupling interaction
• Charge-exchange excitations with finite range interactions including tensor terms
• Charge-exchange dipole excitations in deformed nuclei
• Axially Deformed Proton-Neutron Relativistic Quasiparticle Finite Amplitude Method for Charge-Exchange Transitions
• Recent applications of the subtracted second RPA method