2009/10/31 by Koji Hashimoto
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1088/1126-6708/2009/12/065
9 pages, 6 figures; v2:a refernce added
arxiv created 2009/11/15 · arxiv updated 2015/05/14
We provide a dual gravity description of a supersymmetric heavy nucleus, following the idea of our previous paper arXiv:0809.3141. The supersymmetric nucleus consists of a merginal bound state of A baryons distributed over a ball in 3 dimensions. In the gauge/string duality, the baryon in N=4 super Yang-Mills (SYM) theory corresponds to a D5-brane wrapping S5 of the AdS5 x S5 spacetime, so the nucleus corresponds to a collection of A D5-branes. We take a large A and a near horizon limits of a back-reacted geometry generated by the wrapped A D5-branes, where we find a gap in the supergravity fluctuation spectrum. This spectrum is a gravity dual of giant resonances of heavy nuclei, in the supersymmetric toy example of QCD.