First of all thank you to anyone who replies this question, I am not a physics major, but foolishly chose to take a physics for non-science majors at my local university I am going to.
I am trying to understand how cosmic inflation explains the uniformity of temperature (to around a thousandth of a degree) imprinted from the cosmic microwave background radiation: 2.725K, 2.724K, etc etc.
What I do not understand is that I have been fed contradictory information, these are my following notes from lecture:
- Inflation proposes that a massive expansion happened after an equilibrium of temperature was established in a very small space filled with matter/energy. (Matter and energy that came from where?)
- The uniformity we observe in the temperature we imprinted from the CMB is explained by equilibrium obtained before these regions were rapidly driven apart by inflation.
Here is where the contradiction comes in:
- The inflaton field drove a massive expanse of space via uniform negative pressure, then energy condensed into particles of matter and radiation (bc of $E=mc^2$)
Then where did the radiation of the CMB come from?
One set of notes says, the uniformity of the temperature is from equilibrium before cosmic inflation. But the second says, that there was no matter/radiation until after the cosmic inflation. How can you have temperature equilibrium without matter/radiation?
Somehow during the process of the inflaton field going down its energy curve the Higgs field got turned on?
I feel like I would have learned more from watching tv documentaries. I've got little to no help from professor and from other students.
Edit: what I am asking is: if cosmic inflation causes space to expand rapidly via repulsive gravity (from negative pressure) when the inflaton field is at a high energy point. AND if the inflaton field falling down its energy curve forms matter/energy then How could the CMB have uniformity to the one thousandth degree? wouldnt the massive expansion of space make reaching equilibrium impossible ?