Vibration modes of giant gravitons

Sumit R. Das, Antal Jevicki, Samir D. Mathur
2000 Physical Review D, Particles and fields  
We examine the spectrum of small vibrations of giant gravitons, when the gravitons expand in the anti-de-Sitter space and when they expand on the sphere. For any given angular harmonic, the modes are found to have frequencies related to the curvature length scale of the background; these frequencies are independent of radius (and hence angular momentum) of the brane itself. This implies that the holographic dual theory must have, in a given R charge sector, low-lying non-BPS excitations with level spacings independent of the R charge.
doi:10.1103/physrevd.63.024013 fatcat:fpvduxxbijhgjgo3vh4oow52m4