Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-12-08
Mod.Phys.Lett.A22:107-118,2007
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, Latex file
Scientific paper
10.1142/S0217732307022475
The loop variable technique (for open strings in flat space) is a gauge invariant generalization of the renormalization group method for obtaining equations of motion. Unlike the beta functions, which are only proportional to the equations of motion, here it gives the full equation of motion. In an earlier paper, a technique was described for adapting this method to open strings in gravitational backgrounds. However unlike the flat space case, these equations cannot be derived from an action and are therefore not complete. This is because there are ambiguities in the method that involve curvature couplings that cannot be fixed by appealing to gauge invariance alone but need a more complete treatment of the closed string background. An indirect method to resolve these ambiguities is to require symmetricity of the second derivatives of the action. In general this will involve modifying the equations by terms with arbitrarily high powers of curvature tensors. This is illustrated for the massive spin 2 field. It is shown that in the special case of an AdS or dS background, the exact action can easily be determined in this way.
No associations
LandOfFree
Action for (Free) Open String Modes in AdS Space Using the Loop Variable Approach 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 Action for (Free) Open String Modes in AdS Space Using the Loop Variable Approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Action for (Free) Open String Modes in AdS Space Using the Loop Variable Approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-573123