Graviton Creation

Gravity is the weakest of the four forces, and so
it has negligible influence at the particle level.
Gravity in the universe possibly developed from
a primordial state, such as a quantum vacuum.
The mathematics required to support a theory of
quantum gravity are a current area of research.
Theories of SU(5) and SO(10) Lie groups can
potentially explain symmetry breaking from the
Mana Epoch into the Grand Unified Epoch, and
the consequential origin of gravity as we know it.