The discussion centers around the concept of vacuum density and its potential role in the creation of normal matter and dark matter. Participants explore speculative mechanisms by which vacuum energy might generate matter, particularly in the context of particle physics and cosmology.
Participants express differing views on the mechanisms of particle generation from vacuum density, with some supporting the idea while others challenge it. The discussion remains unresolved with multiple competing perspectives on the nature of vacuum energy and its implications for matter creation.
There are limitations in the discussion regarding the assumptions made about vacuum density and its role in matter creation, as well as the dependence on definitions of terms like "vacuum" and "density." The discussion also highlights unresolved questions about the early universe's composition and the nature of particle generation processes.
What do you mean vacuum "density" creates matter of any kind? I don't understand what you are asking.Dr Aaron said:Without knowing whether WIMPs or axions or something else are what dark matter is composed of, can we speculate about the vacuum density creating only normal matter, and by what mechanism?
The "quantum foam" that you are describing is speculation by John WheelerDr Aaron said:In a vacuum such as space, matter particles can spontaneously be generated into existence and then pop out of existence just as suddenly. The vacuum density drives this, to my understanding, as "potential" energy is transformed into matter as projected by that Einstein guy. However, we can only detect this action when the new material is normal matter. Does anyone know of any theory relating to the generation of dark matter from this vacuum density? or how normal matter sub-atomic particles are generated by this vacuum energy?
There is no such process.Dr Aaron said:In a vacuum such as space, matter particles can spontaneously be generated into existence and then pop out of existence just as suddenly. The vacuum density drives this, to my understanding, as "potential" energy is transformed into matter as projected by that Einstein guy.
mfb, I stand corrected.mfb said:There is no indication that our universe was without particles at any time. The end of inflation might have produced more particles, but we don't know the composition at that point in time anyway.