Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-11-15
Phys.Lett. B609 (2005) 232-240
Physics
Nuclear Physics
Nuclear Theory
18 pages, 4 tables. Accepted in PLB
Scientific paper
10.1016/j.physletb.2005.01.067
We study the energy per particle of symmetric nuclear matter and pure neutron matter using realistic nucleon--nucleon potentials having non central tensor and spin--orbit components, up to three times the empirical nuclear matter saturation density, $\rho_0=0.16$ fm$^{-3}$. The calculations are carried out within the frameworks of the Brueckner--Bethe--Goldstone (BBG) and Correlated Basis Functions (CBF) formalisms, in order to ascertain the accuracy of the methods. The two hole--line approximation, with the continuous choice for the single particle auxiliary potential, is adopted for the BBG approach, whereas the variational Fermi Hypernetted Chain/Single Operator Chain theory, corrected at the second order perturbative expansion level, is used in the CBF one. The energies are then compared with the available Quantum and Variational Monte Carlo results in neutron matter and with the BBG, up to the three hole--line diagrams. For neutron matter and potentials without spin--orbit components all methods, but perturbative CBF, are in reasonable agreement up to $\rho\sim$ 3 $\rho_0$. After the inclusion of the LS interactions, we still find agreement around $\rho_0$, whereas it is spoiled at larger densities. The spin--orbit potential lowers the energy of neutron matter at $\rho_0$ by $\sim$ 3--4 MeV per nucleon. In symmetric nuclear matter, the BBG and the variational results are in agreement up to $\sim$ 1.5 $\rho_0$. Beyond this density, and in contrast with neutron matter, we find good agreement only for the potential having spin--orbit components.
Bombaci Ignazio
Fabrocini Adelchi
Polls Artur
Vidana Isaac
No associations
LandOfFree
Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-39817