The singularity moment at the beginning of the universe

[Rymer]

Flatness? That was expected by most cosmologists, due to inflation. The recent accelerated expansion may indicate that we don't know how gravity behaves on very large scales. Or it may indicate that we don't know all of what makes up the universe. Currently there's not enough evidence to tell either way, and it would be foolish to jump too hard on one possibility.


Pair production is not something that falls under the purvey of GR. Why should it explain this?

Pair production is a 'side-effect' of a gravitational field (it is actually the cause of the gravitational field). If you knew the mechanism of gravity then this is easily explainable. GR can't explain it because it doesn't really have a 'mechanism' for gravity -- only a space-time warp. Its the association of this so called 'anti-matter cloud' and intense gravitational fields that indicates something missing in GR. (Note, I predicted this first as a graduate student in physics in 1975).

 

[Chalnoth]

Pair production is a 'side-effect' of a gravitational field (it is actually the cause of the gravitational field). If you knew the mechanism of gravity then this is easily explainable. GR can't explain it because it doesn't really have a 'mechanism' for gravity -- only a space-time warp. Its the association of this so called 'anti-matter cloud' and intense gravitational fields that indicates something missing in GR. (Note, I predicted this first as a graduate student in physics in 1975).

Seems like you've gone off the deep end there. There is no evidence for any such thing being an accurate description of how the world works.

 

[Rymer]

Seems like you've gone off the deep end there. There is no evidence for any such thing being an accurate description of how the world works.

How do you know if you reject it out of hand. See other plots -- the theory line is based on this derivation. No data-fitting.

Last post on this thread.

 

[Chalnoth]

How do you know if you reject it out of hand. See other plots -- the theory line is based on this derivation. No data-fitting.

Last post on this thread.

I'm not saying I'm rejecting it out of hand. I'm saying you're going much, much too far by saying, "This is how gravity works." I'm sorry, but that statement is completely and utterly unwarranted, given that currently we have no confirmed theory of gravity beyond General Relativity.

 

[George Jones]

How does GR explain the clouds of pair production seen around/near extremely massive objects of the Milky Way galactic core areas?

What "clouds clouds of pair production seen around/near extremely massive objects of the Milky Way galactic core areas?" Give a reference published in a mainstream, reputable journal/text, as required by the Physics Forums rules.

 

[Rymer]

What "clouds clouds of pair production seen around/near extremely massive objects of the Milky Way galactic core areas?" Give a reference published in a mainstream, reputable journal/text, as required by the Physics Forums rules.

Been several -- latest was is January 2008 -- http://www.nasa.gov/centers/goddard/news/topstory/2007/antimatter_binary.html

http://news.softpedia.com/news/Large-Antimatter-Cloud-Discovered-in-Galactic-Core-75831.shtml

http://www.centauri-dreams.org/?p=1667

Still looking for the reported Nature article.

 

[Rymer]

An interesting related article: http://arxiv.org/abs/0801.2786