  We propose an approach to induced gravity, or Sakharov's "metrical
elasticity", which requires only an affine spacetime that accommodates scalar
fields. The setup provides the induction of metric gravity from a "pure affine"
action, and it is established in two possible ways: (i) at the classical level,
Einstein-Hilbert action arises with both, metric and Newton's constant, from
the nonzero potential energy of the background field (ii) at the quantum level
(quantized matter), gravity scale is induced from the one-loop effective action
by integrating out the scalar degrees of freedom. In the former, the
cosmological constant is absorbed leading to the gravitational sector, however,
the fact remains that quantum corrections induce a large cosmological constant.
This new approach adds a crucial feature to induced gravity which is the fact
that the metric structure is not imposed from the scratch, but it is an outcome
of the primary theory.
