  Many-body correlations play an essential role in the ab initio description of
nuclei with nuclear bare interactions. We propose a new framework to describe
light nuclei by the hybridization of the tensor-optimized antisymmetrized
molecular dynamics (TOAMD) and the high-momentum AMD (HM-AMD), which we call
"HM-TOAMD". In this framework, we describe the many-body correlations in terms
of not only the correlation functions in TOAMD, but also the high-momentum
pairs in the AMD wave function. With the bare nucleon-nucleon interaction AV8',
we sufficiently reproduce the energy and radius of the 3H nucleus in HM-TOAMD.
The effects of tensor force and short-range repulsion in the bare interaction
are nicely described in this new framework. We also discuss the convergence in
calculation and flexibility of the model space for this new method.
