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Author  Topic: Big Bang 2 and a new beginning of space/time  
Son Goku Member Posts: 1077 From: Ireland Joined: 
This is silly. If somebody wrote down the Euler equations (which describe fluids) in meters or feet it would still give the same predictions. The units don't matter. I wrote down the field equations in geometric units where G = 1 and c = 1, because that is the way they are commonly written down. What are you trying to prove here, how am I "equivocating"? Units don't matter. I mean I can say Alpha Centauri is 1.34 parsecs or 4.37 light years away, it doesn't affect any predictions of any theory one might use. How could it?
Not with the matter density of the observed universe. Of course if you put in matter far more dense than the matter that really exists then the equations will predict the wrong thing. However this is no different to any other area of physics. If you put in incorrect details about the distribution of charges into Maxwell's equations, then they will predict an incorrect electric field.
You are repeating the lie I pointed out in message 16. The pure vacuum part of the cosmological constant is times too large (not infinitely large however, I don't know where you got that from). However this ignores effects from , contributions to the vacuum energy density coming from particle physics effects. With them added in, one gets a realistic value for . Also the CMB experiments measure far more than the value must take. They measure hundreds of parameters.
No. are finite parameters induced by renormalisation. Renormalisation (the prescription for removing infinities from quantum field theories) generates them.
You didn't understand the paper I'm afraid. The BunchDavies vacuum is a possible quantum state of matter in DeSitter spacetime, the spacetime that describes an expanding accelerating universe. If the spacetime with matter in the BunchDavies vacuum is stable, then it will be stable in other states. So all somebody needs to do to prove stability is prove stability with the BunchDavies vacuum. They're not saying it is the real state.
The values of do not affect the value of , they are separate parameters. Naturally affects the value of . However there is no fine tuning because the parameters are given a single predicted value by quantum field theory.
The exact url is: http://arxiv.org/abs/0712.2282 I would be very interested to hear how you think this paper doesn't support my claim, which was: That the quantum theory, has and requires the parameters and that it predicts an expanding accelerating universe. This was a response to your claim that you weren't aware of any value from quantum theory which could match the observed evolution of the universe. Considering that the paper is a mathematical proof of my claim, I would be interested to know how you consider it not to support that claim.
 
Son Goku Member Posts: 1077 From: Ireland Joined: 
I wanted to deal with this point separately as it is an important one. What I presented you with was a paper with a metastudy of the observations of telescope arrays across the world, as well as satellites in space. These are carefully designed to be sensitive to the frequencies of the CMB. When the measurements of all these probes are put together we get a graph of the power spectrum of the CMB, a detailed description of how the CMB looks, up to the l = 2,500 mode. An impressive feat of engineering. The predictions of the Big Bang model is straight line going directly through all of these observed values. It is one of the most accurate agreements between observation and theory in scientific history. It shows that the Big Bang model directly matches observation. Instead of dealing with this evidence you sidestep it, calling my presentation of it a "bloviation". However this evidence is the most important fact of all. How do you respond to the fact that the Big Bang model matches the power spectrum of the CMB so well?
 
Dr Adequate Member Posts: 15963 Joined: Member Rating: 4.9 
My prediction: he won't even lie, he'll talk nonsense.



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