Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-07-14
JHEP 9809:021,1998
Physics
High Energy Physics
High Energy Physics - Theory
Used background has been adapted to hep-th/9808126 and revised version of hep-th/9805156, slightly changed comment on 1/L term
Scientific paper
10.1088/1126-6708/1998/09/021
Within the classical approximation we calculate the static $Q\bar Q$ potential via the AdS/CFT relation for nonzero temperature and arbitrary internal orientation of the quarks. We use a higher order curvature corrected target space background. For timelike Wilson loops there arises a critical line in the orientation-distance plane which is shifted to larger distances relative to the calculation with uncorrected background. Beyond that line there is no $Q\bar Q$-force. The overall vanishing of the force for antipodal orientation known from zero tempera ture remains valid. The spacelike Wilson loops yield a string tension for a (2+1)-dimensional gauge theory, independent of the relative internal orientation, but sensitive to the background correction.
Dorn Harald
Otto H.-J.
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