What Caused the Big Bang?

Posted by K R on

When cosmologists trace the history of the universe back to the first few nanoseconds, they encounter a metaphysical barrier that no current mathematical bridge can suffice. This is because physicists have yet been able to devise a theory of quantum gravity. Nevertheless, there are various cosmological scenarios about what may have triggered the big bang. Although these scenarios are nothing more than mathematical speculations, the following list contains hypotheses that might hint at the correct answer. Chaotic Inflation: Physicists believe that prior to the initial big bang, the universe underwent a state of rapid, cosmic expansion. What actually caused this rapid, cosmic expansion is unknown. One scenario developed by the physicist Andrei Linde is known as chaotic inflation. This hypothesis involves scalar fields, which are mathematical constructs used to account for the accelerated expansion of the universe. Prior to the initial big bang, Linde speculates a scalar field was rapidly fluctuating. Every once in a while, a patch of this scalar field happened to become smooth. According to reasonable, dynamical assumptions, that smooth patch then “blew up”, became smooth, and turned into the inflationary period that scientists think preceding the big bang. Essentially, chaotic inflation posits an eternal universe on par with the steady state model of the cosmos. Read the rest at Liberty Voice.

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