Solar models: Current epoch and time dependences, neutrinos, and helioseismological properties

We calculate accurate solar models and report the detailed time dependences of important solar quantities. We use helioseismology to constrain the lum inosity evolution of the Sun and report the discovery of semiconvection in evolved solar models that include diffusion. In addition, we compare the co mputed sound speeds with the results of p-mode observations by BiSON, GOLF, GONG, LOWL, and MDI instruments. We contrast the neutrino predictions from a set of eight standard-like solar models and four deviant (or deficient) solar models with the results of solar neutrino experiments. For solar neut rino and helioseismological applications, we present present-epoch numerica l tabulations of characteristics of the standard solar model as a function of solar radius, including the principal physical and composition variables , sound speeds, neutrino fluxes, and functions needed for calculating solar neutrino oscillations.