New variational method of tensor-optimized antisymmetrized molecular dynamics with bare nuclear force*

We developed a new variational method of "tensor-optimized antisymmetrized molecular dynamics" (TOAMD) for nuclear many-body systems. In TOAMD, the correlation functions for the tensor force and the short-range repulsion are successively multiplied to the AMD wave function. These correlation functions are optimized independently and induce many-body correlations in nuclei. It is shown that TOAMD reproduces the results of the few-body calculations for light nuclei with bare Argonne potential. It is also confirmed that variational accuracy of TOAMD is better than that of the Jastrow correlation method. We further extend TOAMD by taking superposition of the AMD basis states as TOAMD+GCM. We include high-momentum components in the Gaussian wave packets of nucleons in AMD. We show that the TOAMD+GCM nicely reproduces the ab-initio results of light nuclei.