Stability of D brane–anti D brane systems in confining gauge theories Kazuo Ghoroku, Akihiro Nakamura and Fumihiko Toyoda Eur. Phys. J. C, 71 1 (2011) 1522 Published online: 08 January 2011 DOI: 10.1140/epjc/s10052-010-1522-0