| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10723490 | Physics Letters B | 2010 | 4 Pages |
Abstract
We consider the type-IIB background generated by the strong-coupling limit of Nc D5 branes wrapped on S2, and focus our attention on a special class of solutions that exhibit walking behavior. We compute numerically the spectrum of scalar fluctuations around vacua of this class. Besides two cuts, and sequences of single poles converging on one of the branch points, the spectrum contains one isolated scalar, the mass of which is suppressed by the length of the walking region. Approximate scale-invariance symmetry in the walking region suggests that this might be interpreted as a light dilaton, the pseudo-Goldstone boson of dilatations.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Daniel Elander, Carlos Núñez, Maurizio Piai,