What's the Frequency of Dark Energy?
Most recent answer: 07/16/2012
- Jim (age 58)
Batesville, AR, USA
Does this have much direct significance? None that I know of.
(published on 07/16/2012)
Follow-Up #1: the sound of dark energy?
- Shawn Hunter (age 48)
Gentrt, Ark USA
I think you've got a few things jumbled together. The seacrhes for matter particles are looking for, among other things, the constituents of "dark matter". That's the stuff that lumps up gravitationally with familiar matter in galaxies. Or at least it looks like that's what is happening. Since this looks like pretty ordinary lumpy stuff that happens not to interact strongly with our particular type of lumpy stuff, it makes sense to search for weakly interacting particles.
"Dark energy" on the other hand, is the standard way of describing something very different, an energy that uniformly pervades all of space. Unlike regular stuff, including dark matter, dark energy does not get more dilute as space expands. The density stays constant. Explanations are usually made in terms of some space-filling field. That wouldn't be at all sound-like, but in principle it could support some sort of sound-like vibrations. A parallel example would be the Higgs field, which can be twanged hard enough to have little Higgs particle waves stirred up.
With regard to our old answer, we said there is no particular frequency associated with the dark energy.
(published on 02/22/2015)