Unitarity of spin-2 theories with linearized Weyl symmetry in $D=2+1$

Details Unitarity of spin-2 theories with linearized Weyl symmetry in $D=2+1$ Unitarity of spin-2 theories with linearized Weyl symmetry in $D=2+1$

2009-08-13

arxiv.org/abs/0908.1954v1

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, no figures

Scientific paper

Here we prove unitarity of the recently found fourth-order self-dual model of spin-2 by investigating the analytic structure of its propagator. The model describes massive particles of helicity +2 (or -2) in $D=2+1$ and corresponds to the quadratic truncation of a higher derivative topologically massive gravity about a flat background. It is an intriguing example of a theory where a term in the propagator of the form $1/\lbrack\Box^2 (\Box - m^2)\rbrack $ does not lead to ghosts. The crucial role of the linearized Weyl symmetry in getting rid of the ghosts is pointed out. We use a peculiar pair of gauge conditions which fix the linearized reparametrizations and linearized Weyl symmetries separetely.

Affiliated with

Also associated with

No associations

Rating

Unitarity of spin-2 theories with linearized Weyl symmetry in $D=2+1$ 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 Unitarity of spin-2 theories with linearized Weyl symmetry in $D=2+1$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unitarity of spin-2 theories with linearized Weyl symmetry in $D=2+1$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-701866