Timeline for Can cosmic inflation be explained by matter antimatter reactions?
Current License: CC BY-SA 3.0
5 events
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| Jul 13, 2012 at 7:42 | comment | added | Ron Maimon | Ok, you're right. The only issue I have is that inflation requires a violation of a dominant energy condition, which doesn't happen with any normal matter. This is why it took until the late 1970s to discover it--- Hawking had already essnetially proved no inflation without violation of an energy condition. That a scalar violates this energy condition (or higher order corrections to GR, if you go Starobinsky's way) then became highly notable. | |
| Jul 13, 2012 at 7:06 | comment | added | Benjamin Horowitz | I suppose it comes down to how pedagogical you want to be. My point was to show that increase in radiation won't cause a "inflationary-like" effect, rather than assuming a priori that only a cosmological constant could cause it. | |
| Jul 13, 2012 at 6:58 | comment | added | Ron Maimon | This is correct, but it doesn't require the Friedmann equation to see it--- it follows from the stress tensor of hot matter alone. | |
| Jul 13, 2012 at 6:47 | history | edited | Benjamin Horowitz | CC BY-SA 3.0 |
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| Jul 13, 2012 at 6:32 | history | answered | Benjamin Horowitz | CC BY-SA 3.0 |