Quote:
Originally Posted by Shnoz
Hi everyone!
My physics teacher and I were having an educated debate this afternoon about the laws of physics before the Big Bang.
My teacher believes there can't have been nothing before the Big Bang, as you cannot get something from nothing.
I then rebutted this with if there was truly nothing before the Big Bang then there would be no laws of physics and therefore nothing to say that something cannot come from nothing.
I don't think I really convinced my teacher and he is free to hold his own views, as I know nothing more than he does about the origins of the universe. 
I was however wondering what other theories and hypothesises there are as to what was 'before' the Big Bang. |
Hello Sophie,
Our Universe has evolved by
the laws of physics changing. In the language of the particle physicist this is known as spontaneous symmetry breaking.
For example the laws of physics of the Universe 10^-43 sec after the BB were quite different to what they are today. The symmetry of the Universe was described by a single force. Today there are 4 forces.
There are mathematical gauge theories that attempt to describe a symmetry before the BB.
In a sense the laws of physics popped into existence with the BB.
Regards
Steven