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Re: Euler char, compactifications and supernumerary theories

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Posted by Sauron on January 31, 2003 at 01:09:22:

In Reply to: Re: Euler char, compactifications and supernumerary theories posted by DickT on January 30, 2003 at 10:52:25:

Thanks for your answer, but it has raised me a new doubt, i have readed the last week a pdf´s of the 1999, or so, evaluating the posibility of formation of black holes in the LHC of the CERN.

They argued that if supernumerary dimensions where truth we would have a rate of 10^7 b-h created every yesar for the expected activity of the LHC. (i arrived at that pdf´s because i am considerating that the W+/W- are wonderfull candidates to create a b-h, even in the absence of supernumerary dimensions, and was looking for thecnihes to attack the description of that processe)

But i belived that the Schwarszchild metric, or better, their Kruskal extension, wich describes the b-h, whee a globaly defined Lorentzian metric, but now i have got the doubt of what is the topological meaning of the r=0 singularity. ¡does it imply that we dón´t have a globally defined metric afther all?

Maybe it is a stupid/basic questions but that problems were not addressed in my math faculty, they only study rimannian metrics, nor in my Physics faculty (not before you are making your ph.D at least), and my knowledge of them comes from reading books (i am not currently making a Ph.D., just trying to do some elemntary research labour by myself in Q.G. and making sporadic collaborations with a friend, he is teacher at an univeristy, in a non related area, topological knots in electromagetism, and maybe in Yang-Mills theories)



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