Non-Extremal D-instantons and the AdS/CFT Correspondence

E. Bergshoeff; A. Collinucci; A. Ploegh; S. Vandoren; T. Van Riet

doi:10.1088/1126-6708/2006/01/061

paper

Non-Extremal D-instantons and the AdS/CFT Correspondence

arXiv:hep-th/0510048 · doi:10.1088/1126-6708/2006/01/061

Abstract

We investigate non-extremal D-instantons in an asymptotically $A d S_{5} \times S^{5}$ background and the role they play in the $A d S_{5} / C F T_{4}$ correspondence. We find that the holographic dual operators of non-extremal D-instanton configurations do not correspond to self-dual Yang-Mills instantons, and we compute explicitly the deviation from self-duality. Furthermore, a class of non-extremal D-instantons yield Euclidean axionic wormhole solutions with two asymptotic boundaries. After Wick rotating, this provides a playground for investigating holography in the presence of cosmological singularities in a closed universe.

30 pages, 3 figures