Naslov
Finite- to zero-range relativistic mean-field interactions

Autori
Nikšić, Tamara ; Vretenar, Dario ; Lalazissis, G. A. ; Ring, Peter

Izvornik
Physical Review C - Nuclear Physics (0556-2813) 77 (2008), 3; 034302-10

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
forces in hadronic systems and nuclear effective interactions; nuclear density functional theory and extensions

Sažetak
We study the relation between the finite-range (meson-exchange) and zero-range (point-coupling) representations of effective nuclear interactions in the relativistic mean-field framework. Starting from the phenomenological interaction DD-ME2 with density-dependent meson-nucleon couplings, we construct a family of point-coupling effective interactions for different values of the strength parameter of the isoscalar-scalar derivative term. In the meson-exchange picture this corresponds to different values of the sigma-meson mass. The parameters of the isoscalar-scalar and isovector-vector channels of the point-coupling interactions are adjusted to nuclear matter and ground-state properties of finite nuclei. By comparing results for infinite and semi-infinite nuclear matter, ground-state masses, charge radii, and collective excitations, we discuss constraints on the parameters of phenomenological point-coupling relativistic effective interaction.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA