Loop Quantum Gravity

[cabinetman]

I was reading something about "black holes", with references to hypothetical evaluations of space and time. Since there is no background for theory before Einstein's field equations assigning a geometry to space-time, and a framework for quantum mechanics relies on background theory.

I've read that Abhay Ashtekar reformulated Einstein's field equations of general relativity, using what have come to be known as Ashtekar variables. Carlo Rovelli and Lee Smolin used this formalism to introduce the loop representation of quantum general relativity, which was soon developed by Ashtekar, Rovelli, Smolin and many others.

In the Ashtekar formulation, the fundamental objects are a rule for parallel transport (technically, a connection) and a coordinate frame (called a vierbein) at each point. Because the Ashtekar formulation was background-independent, it was possible to use Wilson loops (gauge theory) as the basis for a nonperturbative quantization of gravity. Explicit (spatial) diffeomorphism invariance of the vacuum state plays an essential role in the regularization of the Wilson loop states.

What's the viability of finding the quantum theory of gravity? I wonder what other questions would be answered.
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[cgallery]

What's the viability of finding the quantum theory of gravity? I wonder what other questions would be answered.
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Well, if there is a chance, you're never going to find it with that sort of "inside the box" thinking.

[LCHIEN]

you made that all up, didn't you?

[ragswl4]

Soneone needs to be "beamed up". I hear Mr. Spock calling. If you understand the original post then I think you should stand on that circle under the tranporter and prepare for ascent.

[master53yoda]

One other thing to add to your thought is Non-Euclidean geometry (which is more accurate then normal geometry (Euclidean...) but harder to visualize) which states that at a given distance there is an infinite Number of lines parallel. a straight line becomes a hyperbola and if completed has four sectors 2 positive and 2 negative. If space and time are observed in this manor you end up with 2 quadrants of negative entropy (expanding universe) and 2 quadrants of positive entropy(contracting universe) the intersection points are a black hole at the positive entropy intersection and a big bang at the negative side. Anti-matter on the positive entropy side and matter on the negative entropy side. We happen to be in a negative entropy quadrant.

This gives some food for thought about multiple dimensions etc. Also the nature of beings that time doesn't affect, like I believe we will be at some point.

[Mr__Bill]

Not wishing to hijack the thread, but, once you understand that you will have a good grasp of what is happening on Lost.




Bill,

[ironhat]

"See Bobby jump. Jump, Bobby, jump". Did you mean something like that c.man?

[BerniePA]

YES!! Finally -- someone else who understands it all!! Now, 'splain it to me 'gan -- slowly, this time!!! (Hic)