What is the Brain Theory?

Question

my science teacher a long time ago was explaining about the big bang and he said there´s also another theory called the brain theory but he never explained it. anyone know about it?

Answer 1

The Brane Theory as I understand it goes thus:

Two branes exist and collide over time. The collision produces a universe (the Big Bang) that separates the branes keeping them from colliding again. The universe expands into the universe we know and love today. It keeps expanding into nothingness until it is a bunch of photons trillions of light years apart. At this point there is not much keeping the branes apart so they collide again producing another big bang.

I believe this theory was created to explain why the Lambda factor of matter and antimatter flashing into existence is so low. It is theorized that maybe the Lambda factor decreases with time, but the universe is too young to make up for how low it is today. So a theory was proposed that stated that Lambda has been decreasing since before the Big Bang. The Lambda factor was once very high in the first universes but has since decreased as it approaches but will never reach zero. If you can imagine a graph of Lambda over time you will see that it is only just above zero for most of the graph so probability states that we should have a Lambda that is very low... which we do, hence the Brane Theory.

Answer 2

Not brain - brane.... as in "membrane."   It's a theory that describes our universe as being composed of several more dimensions than the 4 we experience, and that there may be (depending on whom you talk to) an infinite number of other universe, made up of the combinations of the different intersections of these 'branes'.  

Answer 3

M-theory