Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-06-04
Phys.Lett. B543 (2002) 127-134
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, some references added
Scientific paper
10.1016/S0370-2693(02)02419-X
We consider the problem of condensation of open string tachyon fields which have an O(D) symmetric profile. This problem is described by a boundary conformal field theory with D scalar fields on a disc perturbed by relevant boundary operators with O(D) symmetry. The model is exactly solvable in the large D limit and we analyze its 1/D expansion. We find that this expansion is only consistent for tachyon fields which are polynomials. In that case, we show that the theory is renormalized by normal ordering the interaction. The beta-function for the tachyon field is the linear wave operator. We derive an expression for the tachyon potential and compare with other known expressions. In particular, our technique gives the exact potential for the quadratic tachyon profile. It can be used to correct the action which has been derived in that case iteratively in derivatives of the tachyon field.
Grignani Gianluca
Laidlaw Mark
Orselli Marta
Semenoff Gordon W.
No associations
LandOfFree
O(D) invariant tachyon condensates in the 1/D expansion 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 O(D) invariant tachyon condensates in the 1/D expansion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and O(D) invariant tachyon condensates in the 1/D expansion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-95957