  We investigate the unhindered gravitational collapse of a homogeneous scalar
field with nonzero potential, a two-dimensional analog of the Mexican
hat-shaped Higgs field potential. The collapsing scalar field is surrounded by
an exterior retarded (outgoing) generalized Vaidya spacetime. We prove that the
density dependence on the scale factor cannot be expressed as an algebraic
function in such a scenario. For a certain transcendental expression of the
density of such field as a function of scale factor, we then show that the
collapse evolves to a singularity at an infinite comoving time, which is
equivalent to saying that the singularity is avoided altogether. An ultra high
density region of the order of Planck length can, however, be reached in a
finite comoving time. The absence of the formation of trapped surfaces makes
this ultra high density region globally visible.
