Centroids of Gamow-Teller transitions at finite temperature in fp-shell neutron-rich nuclei
Abstract
The temperature dependence of the energy centroids and strength distributions for Gamow-Teller (GT) 1+ excitations in several fp-shell nuclei is studied. The quasiparticle random phase approximations (QRPA) is extended to describe GT states at finite temperature. A shift to lower energies of the GT+ strength is found, as compared to values obtained at zero temperature.
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