Antonio..
Before the big bang what was there. Speculation could be that there was nothing at all.
But a very special nothing ... a 'nothing' with a non-zero potential.
Quote:
| The big bang is caused by the equality of spacetime. This is a state of perfect symmetry. Once this is broken the effect is nothing more than the birth of the contact universe Antonio Lao |
if the 'equality' of spacetime is in a perfect symmetrical state could this be the 'nothing-with-potential' . if the potential was realised, conversely symmetry was broken, is it possible the two sides (to break symmetry you must have at least two, and the same with equality) were MASS and ENERGY 
Greg