State-dependent Jastrow correlation functions for 4He nuclei
  We calculate the ground-state energy for the nucleus 4He with V4 nucleon interactions, making use of a Jastrow description of the corresponding wavefunction with state-dependent correlation factors. The effect related to the state dependence of the correlation is quite important, lowering the upper bound for the ground-state energy by some 2 MeV. 
R. Guardiola (Dept. Fisica Atomica, Molecular i Nuclear, U. de   Valencia, Spain), M. Portesi (IFIC, Centre Mixt CSIC - U. d...