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Rotating mesons in the presence of higher derivative corrections from gauge-string duality

M. Ali-Akbari, K. Bitaghsir Fadafan

Nucl.Phys.B835:221-237,2010
21 pages, 11 figures, NPB version, corrections to the effects of higher derivative terms

Abstract: We consider a rotating quark-antiquark $(q\bar{q})$ pair in $\mathcal{N}=4$ thermal plasma. By using AdS/CFT correspondence, the properties of this system have been investigated. We study variation of rotating string radius at the boundary as a function of the tip of U-shape string and angular velocity of rotating meson. We also extend the results to the higher derivative corrections i.e. ${\cal{R}}^2$ and ${\cal{R}}^4$ which correspond to finite coupling corrections on the rotating quark-antiquark system in the hot plasma. In ${\cal{R}}^4$ case and for fixed angular velocity as $λ^{-1}$ decreases the string endpoints get more and more separated. To study ${\cal{R}}^2$ corrections, rotating quark-antiquark system in Gauss-Bonnet background has been considered. We summarize the effects of these corrections in the conclusion section.

Submitted to arXiv on 27 Aug. 2009