Short-range and tensor correlations in light nuclei studied with antisymmetrized molecular dynamics

We developed a new variational framework of "tensor-optimized antisymmetrized molecular dynamics" (TOAMD) for finite nuclei. In TOAMD, we multiply the correlation functions of the short-range repulsion and tensor force to the AMD basis state in the power series expansion. Each correlation function in every term is independently treated in the energy minimization. The total energy and the Hamiltonian components in TOAMD nicely reproduce the results in the few-body calculations for s-shell nuclei. The total energies in TOAMD are also shown to be lower than the values of the variational Monte Carlo using the Jastrow's product-type correlation functions. This indicates that the power series expansion using the independent correlation functions in TOAMD describes the nuclei better than the Jastrow approach. (author)