Variational and Green`s function Monte Carlo calculations of few-body nuclei

Technical Report · Tue Aug 01 04:00:00 EDT 1995

DOI:https://doi.org/10.2172/166456· OSTI ID:166456

Wiringa, R. B.; Carlson, J. ^[1]; Pandharipande, V. R.; Pudliner, B. S.

---

1. Los Alamos National Lab., NM (United States)

We performed an extensive series of variational Monte Carlo (VMC) and Green`s Function Monte Carlo (GFMC) calculations for few-body nuclei using a Hamiltonian, H, containing the new Argonne v{sub 18} NN interaction supplemented by a model three-nucleon (3N) potential. These calculations include the ground state binding energy of {sup 3}H, {sup 3}He, {sup 4}He, {sup 6}He, {sup 6}Li and {sup 6}Be, low-lying excited states in the A = 6 nuclei, and scattering states of {sup 5}He. The variational wave functions, {Psi}{sub v}(R), include central, spin, isospin, tensor, and spin-orbit two- and three-body correlations. These trial functions give upper bounds to the ground-state binding energy {approximately}2% above exact GFMC calculations in {sup 3}H and {sup 4}He.

• Research Organization: Argonne National Lab., IL (United States)
• OSTI ID: 166456
• Report Number(s): ANL--95/14; ON: DE96000985
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGE INDEPENDENCE
GREEN FUNCTION
MANY-BODY PROBLEM
MONTE CARLO METHOD
NUCLEAR STRUCTURE
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
PROGRESS REPORT
VARIATIONAL METHODS
WAVE FUNCTIONS