%0 Journal Article %T Electro-weak Reactions for Astrophysics %A R. Schiavilla %J Physics %D 2000 %I arXiv %R 10.1016/S0375-9474(01)00410-9 %X The status of "ab initio" microscopic calculations of the 2H(p,gamma)3He and 3He(p,e+nu_e)4He reactions is reviewed. The methods used to generate accurate nuclear ground- and scattering-state wave functions, and to construct realistic electro-weak transition operators are described. The uncertainties in the theoretical predictions, particularly those relevant to the p-3He weak capture, are discussed. For the dp radiative capture, the theoretical results are compared with the TUNL data in the energy range 0--100 keV. %U http://arxiv.org/abs/nucl-th/0006026v1