Heavy Quark Potential at Finite Temperature in AdS/CFT

✍ Scribed by Javier L. Albacete

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 186 KB
• Volume: 830
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2009.10.134

✦ Synopsis

A calculation of the heavy quark potential at finite temperature at strong coupling based on the AdS/CFT correspondence is presented. The calculation relies on the method of complex string trajectories previously introduced in [1], and on the introduction of a modified renormalization subtraction. The obtained potential is smooth, negative definite for all quark-antiquark separations, and develops an imaginary part for r > r c = 0.870/πT . At large separations the real part of the potential does not exhibit the exponential Debye falloff expected from perturbation theory and instead falls off as a power law, proportional to 1/r 4 .