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I've learned that there's some experimental evidence of the inflationary model of cosmology.
Starobinsky’s model was a better fit for our observations of the early universe until last week’s sighting of gravitational waves. Now it is unclear which of the competing theories of inflation will reign (see main story).If the BICEP2 data are confirmed, apostles of inflation may celebrate the dramatic confirmation of the general idea of inflation, but not of any concrete simple model of it,” says Starobinsky. Stuart Clark
Pete, have you any knowledge as to how Alan Guth approaches the the 'axis of evil' observations of preferred direction?
Quote from: timey on 02/06/2017 12:14:47Pete, have you any knowledge as to how Alan Guth approaches the the 'axis of evil' observations of preferred direction?No. Sorry. Contrary to popular belief, I don't know everything. Lol!
But you are aware that Alan Guth's model of inflation has no explanation for any preferred direction?
:link 2If the Planck team does see gravitational waves, but at a lower strength than BICEP2, the models get more complex. One solution is to have inflation that starts out fast and slows down abruptly, says Marco Peloso at the University of Minnesota in Minneapolis. Another is to assume that inflation was faster in one direction (arxiv.org/abs/1403.4596v1). This could explain an anomaly in the Planck data that suggests the universe has a “preferred” direction, nicknamed the axis of evil.
:link 1But it’s not just the microwave ripples that seem odd. Wen Zhao, a physicist at the University of Science and Technology of China in Hefei, has been collecting a host of other observations that appear to line up with the axis of evil.
Please don't tell me that you're speaking about the anisotropy of the 3k background radiation because that's not a preferred direction in the universe. That's a sole result of the fact that we're in motion relative to the background radiation. The zero net momentum frame of the 3K radiation is at rest in the rest frame of the matter of the universe. Unless you don't understand that or are going to confuse that fact with the fact that there's no absolute rest frame of reference in the universe?
:Lee SmolinAn oscillation at a wavelength of the scale R takes up a huge part of the sky - about 60 degrees; consequently we see only a few wavelengths, and there are only a few pieces of data, so what we are seeing may just be a random statistical fluctuation. The chances of the evidence for a preferred direction being a statistical anomaly have been estimated at less than 1 part in 1000. But is may be easier to believe in this unlikely bad luck than to believe that the predictions of inflation are breaking down.