Spin-isospin resonances: A self-consistent covariant description

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For the first time a fully self-consistent charge-exchange relativistic RPA based on the relativistic Hartree-Fock (RHF) approach is established. The self-consistency is verified by the so-called isobaric analog state (IAS) check. The excitation properties and the non-energy weighted sum rules of two important charge-exchange excitation modes, the Gamow-Teller resonance (GTR) and the spin-dipole resonance (SDR), are well reproduced in the doubly magic nuclei $^{48}$Ca, $^{90}$Zr and $^{208}$Pb without readjustment of the particle-hole residual interaction. The dominant contribution of the exchange diagrams is demonstrated.
4 pages, 3 figures. Phys. Rev. Lett. in press

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Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/201931

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0808.3159
 http://arxiv.org/abs/0808.3159
 Phys.Rev.Lett.101:122502,2008
 doi:10.1103/PhysRevLett.101.122502

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arXiv