Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-12-02
JHEP 1101:119,2011
Physics
High Energy Physics
High Energy Physics - Theory
43 pages, 8 figures, references edited, few typos corrected, updated to match the published version
Scientific paper
10.1007/JHEP01(2011)119
In the context of gauge/gravity duality, we study both probe D7-- and probe D5--branes in global Anti-de Sitter space. The dual field theory is N=4 theory on R x S^3 with added flavour. The branes undergo a geometrical phase transition in this geometry as function of the bare quark mass m_q in units of 1/R with R the S^3 radius. The meson spectra are obtained from fluctuations of the brane probes. First, we study them numerically for finite quark mass through the phase transition. Moreover, at zero quark mass we calculate the meson spectra analytically both in supergravity and in free field theory on R x S^3 and find that the results match: For the chiral primaries, the lowest level is given by the zero point energy or by the scaling dimension of the operator corresponding to the fluctuations, respectively. The higher levels are equidistant. Similar results apply to the descendents. Our results confirm the physical interpretation that the mesons cannot pair-produce any further when their zero-point energy exceeds their binding energy.
Erdmenger Johanna
Filev Veselin
No associations
LandOfFree
Mesons from global Anti-de Sitter space does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mesons from global Anti-de Sitter space, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mesons from global Anti-de Sitter space will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-604377