Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-04-26
Prog.Theor.Phys. 113 (2005) 355-367
Physics
Nuclear Physics
Nuclear Theory
7 pages, ReVTeX
Scientific paper
10.1143/PTP.113.355
Role of the Landau-Migdal parameters with the pseudovector ($g_a$) and the tensor coupling ($g_t$) is examined for the giant Gamow-Teller (GT) states in the relativistic random phase approximation (RPA). The excitation energy is dominated by both $g_a$ and $g_t$ in a similar way, while the GT strength is independent of $g_a$ and $g_t$ in the RPA of the nucleon space, and is quenched, compared with that in non-relativistic one. The coupling of the particle-hole states with nucleon-antinucleon states is expected to quench the GT strength further through $g_a$.
Kurasawa Haruki
Maruyama Tomoyuki
Suzuki Toshio
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