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time traveller d
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i all ways wonder this. what existed before the big bang?
hi i think i read somewhere that,it is assumed that time came into existence with big bang just as the other dimensions hence the concepts like 'before' ,'after' etc.are irrevelant with bigbang.time traveller d said:what existed before the big bang?
time traveller d said:i just came up with a theory. another universe. maybe when a
universe ends it explodes in a big bang and creates another universe. what do you guys think?
daveb said:a small silence?
time traveller d said:i just came up with a theory. another universe. maybe when a
universe ends it explodes in a big bang and creates another universe. what do you guys think?
Chronos said:Still dodging the issue, in my mind. At some point [e.g., the 'original' big bang] we must confront a breakdown in causality. The cyclical universe model merely pushes responsibility for explaining the existence of our universe to an earlier 'cycle'. I fail to see how this is superior to arguments favoring a universe from nothing.
EL said:If the Universe is "cyclic", why do we need a moment of creation (i.e. an "original" big bang)?
However, I agree in that I do not find an eternal (cyclic) universe more satisfactory than a "universe from nothing".
Silverbackman said:I think the cyclic model seems to make sense...
Enos said:I don't think there is evidence that creation exist. So why should one assume that it should and believe that there was nothing before the big bang and that our existence needed to be created. Creation to me is an old belief that stuck around from before science started explaining things like the process of life, the formation of planets and stars, our weather and many other things that would make one believe that creation exist.
Universe_Man said:We could never really know for certain, but I am sure however this whole thing happened, it is pretty damn amazing.
wolram said:A simple view (some thing) must have been in existence for eternity for us to
be here at the present, so (whatever) model you posit, it comes down to the
eternal (thing)
time traveller d said:what existed before the big bang?
CosmologyHobbyist said:Hi everyone! I have 3 questions :
If the big bang was a quantum event (as suggested by some entries in this thread) - doesn't that require quantum field to exist before the big bang? Wouldn't this make it likely that quantum field exists "outside" the big bang universe? My question 1 : Does anybody have more information on the topic of quantum field before and outside of big bang universe?
The only other big bang origin I have heard of is from singularity - Question 2 : Is there a mainstream big bang theory that creates the quantum field out of the big bang?
Question 3 : Are there other mainstream theories on relationship of big bang and quantum field?
Thanks for putting up with my ignorance! :)
CosmologyHobbyist said:Thanks very much for your answer, Marcus. I did read the Ashketar paper before I posted (I'll read it again now!); I suppose I was trying to find a synopsis of current views.
You might be interested in this.marcus said:In the braneworlds picture, branes bump together repeatedly
search arxiv.org for author name Steinhardt
braneworld cosmology is very different from loop quantum gravity cosmology. (and there are other attempts too, Hawking had a quantum cosmology back in the 1980s which no one works on much but which he has popularized)
I do not know of a synopsis that harmonizes the diverse ideas.