2005/10/06 by E. Bergshoeff, A. Collinucci, A. Ploegh +2 · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1088/1126-6708/2006/01/061
published as JHEP0601:061,2006 · 30 pages, 3 figures
arxiv created 2005/10/06 · arxiv updated 2009/12/01
We investigate non-extremal D-instantons in an asymptotically AdS5 × S5 background and the role they play in the AdS5 / CFT4 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.