Question: Has anyone considered that the increase rate of expansion of the universe may be do to a combination of the universe’s rigid body mode (Big bang expansion) and flexible body mode or modes of vibration of the universe caused by the big bang (matter/anti-matter explosion), and not resulting from dark energy?
This would produce positive acceleration rate, at times, for the universe, which would not expected by rigid body acceleration alone.
I based my assumption of excitation of the universe’s natural frequencies occurred right after the big bang (matter/anti-matter explosion), when matter first existed. At this time the universe was, based on internet research, 1000 times the diameter of our solar system (5,913,520,000,000 km) and the mass presently is 1.59486e+055 kg. This would give an average density of 665.167 lb/in^3, or about 2,350 times the density of steel. For me, this would be an excellent environment for the excitation of the natural frequencies of the universe.
The natural frequency excitations would also produce nodal lines of concentrated mass, as seen in the universe today. — Kari
Answer: In fact, there is no resonant frequency associated with the universe. This isn’t a physically meaningful quantity to associate with the universe or the big bang. I believe what you are looking for is an explanation for the quantum fluctuations within cosmic inflation which resulted in the current structure of our universe. The link I have provided is a nice detailed description of cosmic inflation which should provide a good description of the current theory.