D-Instantons on the boundary

Ian I. Kogan, Gloria Luzon

Published 1998-06-24, updated 1998-07-02Version 3

The Maldacena's proposal has established an intriguing connection between string theory in AdS spaces and gauge theory. In this paper we study the effects of adding D(-1)-branes to the system of D3- or (D1-D5)-branes and we give arguments indicating that D(-1)-branes are necessary to describe four and two dimensional instantons.