Lambda interacts with gravity to give expantion

In summary, it has been stated that lambda interacts with gravity to give expansion. Can anyone give the mechanics of this interaction?
  • #1
wolram
Gold Member
Dearly Missed
4,446
558
it has been stated that lambda interacts with gravity to
give expansion,can anyone give the" mechanics" of this
interaction?
 
Last edited by a moderator:
Physics news on Phys.org
  • #2


Originally posted by wolram
it has been stated that lambda interacts with gravity to
give expansion,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 don't 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
 
  • #3
thankyou MARCUS.

well if you don't have the answer its no use looking

any more.
:smile:
 
  • #4
Originally posted by wolram
thankyou MARCUS.

well if you don't 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
 
  • #5
Originally posted by wolram
it has been stated that lambda interacts with gravity to
give expansion,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).
 
  • #6
facinating and hateful, i would love to kill
it and have it with mint sauce.
 

1. What is the concept of lambda interacting with gravity to cause expansion?

Lambda, also known as the cosmological constant, is a term in the equations of general relativity that describes the energy density of the vacuum of space. When combined with gravity, it results in a repulsive force that causes the expansion of the universe.

2. How does this interaction affect the expansion of the universe?

The interaction between lambda and gravity results in a repulsive force that counteracts the gravitational pull of matter. This leads to the expansion of the universe at an accelerating rate.

3. What evidence supports the concept of lambda interacting with gravity to cause expansion?

Observations of distant supernovae, the cosmic microwave background radiation, and the large-scale structure of the universe all support the idea that the universe is expanding at an accelerating rate, which can be explained by the interaction between lambda and gravity.

4. Can you explain the role of lambda in the expansion of the universe in simpler terms?

Lambda is like a "push" or repulsive force that counteracts the "pull" of gravity and causes the universe to expand at an accelerating rate. It is a fundamental aspect of the universe that helps explain its overall expansion.

5. Are there any potential implications of lambda interacting with gravity for our understanding of the universe?

The concept of lambda interacting with gravity has significant implications for our understanding of the universe. It helps explain the observed expansion of the universe and may also have connections to other fundamental aspects of physics, such as dark energy and the nature of space itself.

Similar threads

  • Special and General Relativity
Replies
1
Views
820
  • Special and General Relativity
Replies
5
Views
426
  • Special and General Relativity
2
Replies
50
Views
2K
  • Special and General Relativity
Replies
2
Views
543
Replies
3
Views
328
  • Special and General Relativity
2
Replies
62
Views
3K
Replies
3
Views
908
  • Special and General Relativity
Replies
5
Views
1K
Replies
2
Views
705
Replies
3
Views
723
Back
Top