Part 6 of my review of the book: “The Big Picture: On the Origins of Life, Meaning and the Universe Itself,” by Sean M. Carroll. Part 5 is found here.
Carroll spends several chapters discussing the quantum mechanical framework for the Core Theory, as he calls it. Quantum mechanics has been an extremely successful physical theory exquisitely predicting with enormous precision some parameters in particle physics. But what many people have heard of quantum theory is more about the various interpretations applied by physicists (e.g. Bohr’s abstract physical description, or, Everett’s many-worlds) to the way the theory might work beneath what we can measure.
Regardless of the correct interpretation it has enjoyed enormous success as a theory of physics in what is called the standard model of particle physics. The second very successful theory is general relativity—Einstein’s theory of gravity. Both work extremely well in their respective domains of operation, but outside that, in the realm of what is called quantum gravity neither operate nor has a theory been found to unite them. But that is exactly what Stephen Hawking and others have been seeking, to have the Universe begin in a quantum fluctuation of a meta-stable false vacuum.
But even though we have this limitation, in the realm of what humans can measure, Carroll has faith and writes:
“What we can do is show that physics by itself is fully up to the task of accounting for what we see.” (p.179)
However he admits that one class of particles not part of the current Core Theory are those that make up “dark matter” in the Universe. Such alleged weakly interacting putative particles are allowed for in the Core Theory because they are so weakly interacting with normal atomic matter that they are hard to detect. I would argue that dark matter and other dark entities are a philosophical construct used to keep the standard big bang cosmology from being discredited.1 Dark matter was first needed to explain the dynamics of spiral galaxies. Now it seems that it is no longer needed, when standard physics is applied correctly.2