The Big Bang Theory, the mainstream theory of the scientific community about the origin of the universe, is not perfect and has flaws. Perhaps the biggest flaw is: how did the Big Bang come about? What was the state before the Big Bang?
Strictly speaking, we know nothing about the state before the Big Bang, because all existing physical laws were established after the Big Bang, and the singularity of the moment of the Big Bang is a gap that humans can never cross.
According to the interpretation of the Big Bang theory, the universe was born from "creating something out of nothing", but how does "non" give birth to "existence"?
Let’s have a thought experiment. Imagine a completely empty space, that is, "nothing", constantly enlarge the space and infinitely. When zooming to a certain level, you will find that this so-called virtual space is not absolutely "nothing", but is always scattered with quantum fluctuations, and virtual particles will be randomly derived and disappear instantly. Why is
called "virtual particles"? Because they are derived from vacuum energy by credit, and then disappear instantly and return the energy. This kind of quantum fluctuation and has been happening all the time, as lively as a boiling ocean. The virtual particles derived from
are the basis of the origin of the universe.
But you will definitely question that the virtual particles derived randomly are essentially different from the vast universe that exists. Not only that, hundreds of millions of galaxies are unlikely to be derived at the same time, right? This probability is too small.
However, from the quantum mechanics level, anything that may happen will eventually happen, no matter how small the probability is. However, according to the perspective of quantum ups and downs, even if the universe is born, shouldn’t it disappear immediately? Why has our universe not disappeared?
In theory, our universe should indeed disappear, but there is a premise: the universe is closed or open.
In fact, our universe is flat. Through complex mathematical calculations, scientists have discovered that the flat universe can evade the critical point of collapse and expand and survive.
In fact, most universes do disappear as soon as they were born, and our universe is lucky and has not disappeared. We should be glad that we were born in such a perfect universe.
There is another problem. Does so much energy and mass appear out of thin air violate the law of conservation of energy?
does not. There is positive energy visible to the naked eye in our universe, that is, matter. But at the same time, there is also negative energy, that is, the energy of the gravitational field generated by the mass of matter, and the two add up to zero.
All things are born in nothing, and will eventually return to nothing!
