1. ## Re: Is a black hole made of matter ?

Originally Posted by Glitch
My understanding of string theory is introductory, at best. I have enough difficulty getting my head around non-Euclidean geometry of quantum mechanics, but I find it far easier to understand than the eleven dimension multiverse postulated by string theory. People a lot smarter than I have embraced string theory as a possible explanation for unification, including Stephen Hawkings, so there must be something to it. When you get into four dimensional manifolds and how this can violate Newton's law of conservation of momentum, my brain begins to hurt.
I've been following string theory (but not playing with it) since I became aware of Gabriele Veneziano's paper of 1968 in the early 70s. I've never played with it actively. But there are so many mathematical difficulties that arise in QFT because QFT is alleged to have a real manifold as a background. OTOH QFT on a discrete lattice has fewer problems.

Lattice field theory - Wikipedia, the free encyclopedia

I have long had the hunch that unification of gravitation and quantum physics is going to require either:
1) giving up real continuous manifolds in favor of a lattice or other discrete structure OR
2) using a noncommutative Lie algebra to generate space time

Possibility 1) is being worked on by a Hawking student Fay Dowker: Fay Dowker - Wikipedia, the free encyclopedia
.... and a host of others.

Possibility 2) is being worked on Alain Connes and other: Alain Connes - Wikipedia, the free encyclopedia

Possibility 2 may also be a way of bridging the gap between a completely discretized space-time and a continuous space time.

Anyway, with such folks about, I feel no guilt at having left physics to do other things. I wasn't really needed, I think.

2. ## The Following 4 Users Say Thank You to not_Fritz_Argelander For This Useful Post:

astroval (07-12-2013),chas53 (07-12-2013),Glitch (07-12-2013),kencrowder (07-12-2013)

3. ## Re: Is a black hole made of matter ?

If we talking about some strange theories of massless black hole, it good to note that even more strange theory exist - Black Holes of Negative Mass.

4. ## The Following 3 Users Say Thank You to astroval For This Useful Post:

Glitch (07-12-2013),kencrowder (07-12-2013),not_Fritz_Argelander (07-12-2013)

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