Quantum Monte Carlo Calculations of Light Nuclei

✍ Scribed by Steven C. Pieper

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 435 KB
• Volume: 751
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2005.02.018

✦ Synopsis

Variational Monte Carlo and Green's function Monte Carlo are powerful tools for calculations of properties of light nuclei using realistic two-nucleon (NN ) and three-nucleon (NNN ) potentials. Recently the GFMC method has been extended to multiple states with the same quantum numbers. The combination of the Argonne v 18 two-nucleon and Illinois-2 three-nucleon potentials gives a good prediction of many energies of nuclei up to 12 C. A number of other recent results are presented: comparison of binding energies with those obtained by the no-core shell model; the incompatibility of modern nuclear Hamiltonians with a bound tetra-neutron; difficulties in computing RMS radii of very weakly bound nuclei, such as 6 He; center-of-mass effects on spectroscopic factors; and the possible use of an artificial external well in calculations of neutron-rich isotopes.