astarath: Your statement and questions: " The big bang I feel happened but it was a reaction. What was the action that caused it and who performed the action" doesn't seem to adequately reflect what's known about nature's ability to "fluctuate".
For example, all tunneling phenomena (such as radioactive decay) "happen" even though there is no "cause" as we normally understand the term. Thus, an alpha particle (for example) is emitted by a polonium-210 nucleus even though the particle "shouldn't" have enough energy to escape. Stated differently, experiments show that nature "fluctuates", e.g., giving more energy to an alpha particle than it "should" have, i.e., than it would have, if our usual ideas about "cause and effect" were valid at "quantum-mechanical scales".
Relative to your question "what
action
caused
it [the Big Bang]?", the suggestion is that in such "fluctuations" in the original "total nothingness", some symmetry was broken (perhaps "parity", perhaps "the God particle" formed, or perhaps a "string" of positive energy "tied itself in a knot"), resulting in the Big Bang, leading to the separation of energy into positive and negative parts that today we call "the universe", with some of the positive energy in what we call mass and the negative energy being what we call "the vacuum", but with the total energy (and momentum, electrical charge, etc.) still summing to exactly zero, as it was before the Big Bang. That is, there is still "nothing" here, but it's been separated into positive and negative components.
That's what Edward Tryon meant, in his 1974 Nature article (vol. 248, p.396) entitled "Is the Universe a Vacuum Fluctuation", when we wrote
"In answer to the question of why it happened, I offer the modest proposal that our Universe is simply one of those things which happen from time to time."
Similarly, it's what Alan Guth meant (as quoted on p. 129 of Stephen Hawking's book "A Brief History of Time"):
It is said that theres no such thing as a free lunch. But the universe is the ultimate free lunch.
If such ideas interest you, you may want to look at my (free!) online book which you can find by using "zenofzero" in a Google search. I wrote the book explicitly wrote for my teenage granddaughter, but hope that it'll be of some value to other teenagers as well; it's entitled "Love Letters from Grampa -- about Life, Liberty, and the Zen of Zero." The "Zen of Zero" phrase refers both to the universe creating itself from "the original nothing" (i.e., zero) and to resulting influences of such ideas on how we might want to live our lives. For example, there's Einstein's famous remark:
"Once you can accept the universe as matter expanding into nothing that is something, [then] wearing stripes with plaid comes easy."
perhaps you would like to introduce yourself to the rest of the forum here:
