Multi-spin string solutions in AdS black hole and confining backgrounds

Mohsen Alishahiha, Amir E. Mosaffa, Hossein Yavartanoo
2004 Nuclear Physics B  
We study semi-classical multi-spin strings in the non-supersymmetric backgrounds of $AdS$ Black Hole and Witten's confining model. We consider constant radius strings with rotations along the isometries of the backgrounds. In the $AdS$ Black Hole, solutions exist only if there is a non-zero spin in the Black Hole part. In contrast with the $AdS$ background, we find solutions which although have no rotation in the $S^5$ part, have a regular $\lambda$ expansion in the expression for large energy.
more » ... n for large energy. In the near-extremal $D_3$ and $D_4$ backgrounds, we find that strings have to be located on the confining wall. We also discuss the stability of solutions by considering the fluctuation Lagrangians.
doi:10.1016/j.nuclphysb.2004.03.015 fatcat:pm6gndxlxfds5jtyairljjtqlu