Currently the standard model incorporates the hypothetical stuff called ‘dark energy’. That is some sort of anti-gravity type energy that is alleged to have caused the expansion of the universe to start to accelerate back about 5 billion years ago. But ‘dark energy’ is otherwise unknown to modern physics. Really it is a fudge factor in the big bang theory.
Now some cosmologists have suggested ‘dark energy’ may have had another role in the early universe. This occurred after some very brief period of hypothesized cosmic inflation that spread out whatever particles existed in the universe then to make it extremely dilute.
Astrophysicist Paul Sutter in an article on Space.com wrote:[i]
“The researchers found that a brief fluctuation in dark energy could have flooded the early universe with exotic particles like quarks, gluons and leptons that would eventually congeal into the atoms we know and love today.”
This flood of new particles came from, that is, condensed out of a putative fluctuation in ‘dark energy’. In essence it means the universe, which was extremely cold at that time, was ‘reheated’ with this flood of new particles. This is what is called the ‘big bang’ – a sudden phase of hot particles flooding the universe as it expands.
There you have it! More fairy tales! An unknown form of energy is used to not only explain the observations of the current state of the universe, which does not otherwise fit the theory, but also now it can be used to explain the big bang fireball, from which it is alleged all matter arose.
[i] Paul Sutter, Did dark energy cause the Big Bang? Space.com, March 4, 2020