Dynamical Triangulations linked to Spin Foams

[Martin]

today a Cambridge postdoc Daniele Oriti posted a paper

http://arxiv.org/gr-qc/0412035

which links his line of research, the Spin Foams approach to quantum gravity,

to the approach called Dynamical Triangulations

 

 

there is evidently a convergence of non-string QG theories

underway: DT, SpinFoam, Loop QG, Hawking path integral.

 

 

oriti's paper is called

The Feynman propagator for quantum gravity: spin foams, proper time, orientation, causality and timeless-ordering

 

Oriti got his PhD in Quantum Gravity from Cambridge----i saw his thesis last year.

It is interesting that he is still at Cambridge

As I recall he was working with R. Williams who is an expert on

discrete General Relativity, Regge calculus, that sort of thing IIRC.

[Severian]

Oriti got his PhD in Quantum Gravity from Cambridge----i saw his thesis last year.

It is interesting that he is still at Cambridge.

 

That is actually a rather negative statement. One is usually discouraged from staying on at the same place, so the best people move on...

[Severian]

I don't mean to steal your thunder, but how about a more interesting paper on gravity posted today:

http://www.arxiv.org/abs/hep-ph/0412109

"Lagrangian formalism of gravity in the Randall-Sundrum model"

[Martin]

One is usually discouraged from staying on at the same place' date=' so the best people move on...[/quote']

 

I know!

that is why I think it is interesting, because it doesnt follow the pattern.

 

Of course I could be wrong in my estimation, but from the quality of the people he has published with, and his co-authored research, I dont think Oriti counts at all as a lightweight.

 

so it is interesting to me that the pattern is broken. (there are a couple of possible explanations which I occur to me but are too speculatative to mention)

[Martin]

I don't mean to steal your thunder, but how about a more interesting paper on gravity posted today:

http://www.arxiv.org/abs/hep-ph/0412109

"Lagrangian formalism of gravity in the Randall-Sundrum model"

 

Please comment on it! Since it does not fall under the topic of this thread, dynamical triangulations, I started a new thread for it next door.