AdS/CFT beyond the unitarity bound

Details AdS/CFT beyond the unitarity bound AdS/CFT beyond the unitarity bound

2011-05-31

arxiv.org/abs/1105.6337v1

Physics

High Energy Physics

High Energy Physics - Theory

24 pages

Scientific paper

Scalars in AdS${}_{d+1}$ with squared masses in the Breitenlohner-Freedman window $-d^2/4 \le m^2 < -d^2/4 +1$ (in units with the AdS scale $\ell$ set to 1) are known to enjoy a variety of boundary conditions. For larger masses $m^2 > -d^2/4 +1$, unitarity bounds in possible dual CFTs suggest that such general boundary conditions should lead to ghosts. We show that this is not always the case as, for conformally-invariant boundary conditions in Poincar\'e AdS that would naively violate unitarity bounds, the system is generically ghost-free. Conflicts with unitarity bounds are avoided due to the presence of unexpected pure gauge modes and an associated infrared divergence. The expected ghosts appear when the IR divergence is removed either by deforming these boundary conditions or considering global AdS.

Affiliated with

Also associated with

No associations

Rating

AdS/CFT beyond the unitarity bound 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 AdS/CFT beyond the unitarity bound, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AdS/CFT beyond the unitarity bound will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-339107