hep-ph/0204012
Glueballs and AdS/CFT
Authors: John Terning
I review the calculation of the glueball spectrum in non-supersymmetric
Yang-Mills theory (in 3 and 4 dimensions) using the conjectured duality
between supergravity and large N gauge theories. The glueball masses are
obtained by solving the supergravity wave equations in a black hole geometry.
The masses obtained this way are in unexpectedly good agreement with the
available lattice data, and are much better than strong-coupling expansion
results. I also show how to use a modified version of the duality to
calculate the glueball mass spectrum with some of the Kaluza-Klein states of
the supergravity theory decoupled from the spectrum.