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-   -   Lambda interacts with gravity to give expantion (http://www.physicsforums.com/showthread.php?t=6631)

wolram Oct2-03 05:04 PM

lambda interacts with gravity to give expantion
 
it has been stated that lambda interacts with gravity to
give expantion,can anyone give the" mechanics" of this
interaction?

marcus Oct3-03 02:14 AM

Re: lambda
 
Quote:

Originally posted by wolram
it has been stated that lambda interacts with gravity to
give expantion,can anyone give the" mechanics" of this
interaction?

I can not wolram.
I find it puzzling that the concentraton of energy and the pressure in a region should curve the space around it

this is what this 1915 equation says

it says, in words

curvature = (some constant times) energy density and pressure


if it was only energy density that would be mysterious enough but have you registered that it is, to a small extent, the pressure inside the core of the sun that makes the sun attractive to the earth and holds us in orbit

this 1915 equation is still on our plate, we dont seem to have assimiliated it yet, or what space is or time is either

Lambda is just some energy that has some (negative) pressure associated with it. It gets into the equation pretty much like other energy and pressure----the premier puzzle is why energy and pressure work at all to curve space

wolram Oct3-03 03:42 AM

thankyou MARCUS.

well if you dont have the answer its no use looking

any more.
:smile:

marcus Oct3-03 10:46 AM

Quote:

Originally posted by wolram
thankyou MARCUS.

well if you dont have the answer its no use looking

any more.
:smile:

probably an example of the renowned warwickshire humour
that americans do not understand:wink:

it seems like the most interesting question around
and I suspect you agree

jeff Oct3-03 12:03 PM

Quote:

Originally posted by wolram
it has been stated that lambda interacts with gravity to
give expantion,can anyone give the" mechanics" of this
interaction?

Maybe the accelerating expansion is a result of the breakdown at large distances instead of small of GR as a classical theory. (And thus my quota of one crazy idea a day is filled).

wolram Oct3-03 12:31 PM

facinating and hateful, i would love to kill
it and have it with mint sauce.


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