I got a PhD in physics back before string theory was around. As I said, you don't need any kind of exotic string theory to get vacuum energy which has an important bearing on the big picture.
LOL
Good for you.
We have another strong disconnect. What I said about spontaneous creation and annihilation can't come from anywhere except Heisenburg's uncertainty and it was discovered long before string theory came about. Yet, you call me dishonest, and then say pretty much the same thing that I just said.
I was talking about COSMOLOGY.
When you say that there is 'experimental foundation' for spontaneous creation and annihilation of matter, you make it appear that it could happen in cosmological scales -- enough to explain an accelerating universe.
That simply isn't the case.
What do you mean What???
Well yes, and....
Analogy? My analogy? Or Hawking's?
IF the total energy in the universe is zero, that means that the sum of the energy from gravity is equal to that of lambda. Since the first is a contracting tendency of space-time while the latter is a tensile/expanding tendency, you have a universe that is in a steady-state -- which this universe is
NOT.
Conservation is violated? Just because something is accelerating doesn't mean conservation is violated. That often means that potential energy is being traded for kinetic energy.
Of course conservation is violated.
We already know that the amount of gravitational energy is constant because the amount of matter is fixed. We already know that the gravitational energy contracts space-time on itself.
Without an opposite tendency to counter this, the universe couldn't have expanded within the last 13 billion years to what it is today. That is why I said that a spherical space-time geometry is unstable. The universe would quickly contract to the singularity from which it came.
And even if the inflationary stage of the nascent universe somehow imparted it with a constant rate of expansion, we would observe either the universe contracting at an accelerated rate or expanding at a decelerated rate.
For space-time to expand at an accelerating rate, you need an increasing amount of whatever is countering gravity in the first place -- presumably, lambda.
Note that this analogy is exactly like a mass moving within a gravitational field. And while the mechanism to convert potential to kinetic energy is there, there is
NO such equivalent mechanism by which to convert gravitational energy to lambda. What we do know is hubble's separation -- that the speed by which two celestial objects are moving away from each other is proportional to the distance between them -- meaning, the
energy of lambda is dependent on the amount of vacuum.
I have read an ingenius theory regarding this, but you need to postulate the variance of c -- that the speed of light is changing. That is not what you are talking about, are you?
Ontology? I haven't heard of that theory of the universe.
It is a branch of philosophy.