Recent content by dlouapre

People looked at string theory because it contained graviton/spin 2 excitations !

http://www.aei-potsdam.mpg.de/events/stringloop.html The talks are online at AEI website... David

That's correct. This gauge fixing along a maximal tree is new to the Freidel/Livine construction for two reasons : the gauge volume associated to the gauge invariance at the vertices is Vol(G)^V where V is the number of vertices and Vol(G) the volume of the group. Of course in the compact case...

Think about the SU(2) case first and everything will become clear (it's not because its compact that the method doesn't apply) So take the SU(2) group elements in terms of Euler angles. g(phi,theta,psi)=h(phi) a(theta) h(psi) where h(phi) are the 2x2 matrices diagonal with e^{i phi},e^{-i...

That's a well written paper. Here are some guidelines for section 4 : The key part to understand is 4.1.1 It contains the definition 4.1.2 is generalization to many Cartan and is formally the same if you understand Weyl integration formula. 4.2 is generalisation, no too hard since (4.29)...

I'm not sure I understand your puzzle but let me try to answer it. The gauge transformation of the connection is parametrized by k which is a field over the manifold, with values in the group G. So k in k^{-1}Ak + k^[-1} dk is actually k(x) for x point of the manifold. Now take a connection...

I'm not at the strings/loop meeting but I know that Carlo Rovelli's talk will actually be given by my boss Laurent Freidel. I don't know what's going to be inside the talk because Laurent hadn't finished it when he left for Germany. However it's going to be a review talk intended for non-expert...

By the way I should say that what we proposed to cure the 10j problem is so far a very "ad hoc" modification and I don't really believe in that anymore...but I've got new ideas on this issue..not yet enough to write a paper on that. David

That's funny because I have to prepare a CV and I tried to take a look at CV's of quantum gravity researchers by typing something like "CV quantum gravity" on google...and I just found this thread talking about my CV on my highly non-updated web page ! I should update that :-) David