New Instanton Effects in String Theory

Details New Instanton Effects in String Theory New Instanton Effects in String Theory

2005-12-05

arxiv.org/abs/hep-th/0512039v2

JHEP 0602:060,2006

Physics

High Energy Physics

High Energy Physics - Theory

49 pages, harvmac, v2: references added

Scientific paper

10.1088/1126-6708/2006/02/060

We describe a new class of instanton effects in string compactifications that preserve only N=1 supersymmetry in four dimensions. As is well-known, worldsheet or brane instantons in such a background can sometimes contribute to an effective superpotential for the moduli of the compactification. We generalize this phenomenon by showing that such instantons can also contribute to new multi-fermion and higher-derivative F-terms in the low-energy effective action. We consider in most detail the example of heterotic compactification on a Calabi-Yau threefold X with gauge bundle V, in which case we study worldsheet instanton effects that deform the complex structure of the moduli space associated to X and V. We also give new, slightly more economical derivations of some previous results about worldsheet instantons in Type IIA Calabi-Yau compactifications.

Affiliated with

Also associated with

No associations

Rating

New Instanton Effects in String Theory 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 New Instanton Effects in String Theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Instanton Effects in String Theory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-86994