Hi,
I've been wondering about the concept of negative energy, said to be theoretically possible by Quantum Mechanics, and its possible physical manifestation.

I am also curious about how negative energy could have played a role in the Big Bang as from the Boomerang Antarctica experiments data, it was concluded that the universe has a "flat" topography and the net energy of a flat system is zero. So, for our universe to exist means there must exist an equal amount of negative energy in some form.

I know that this may seem like a tall order so I'll be happy even if you merely direct me to the appropriate resources to understand it myself. Also, the lesser the math the better. Something like a Dr Michio Kaku book ought to be easy to digest though i might be able to handle tougher books too.

Thanks