Speaker
Prof.
Defu Hou
(Central China Normal University)
Description
Heavy-quark potential and jet quenching parameter are quantities of importance for high energy heavy-ion collsion physics and the quark matter. The former can
probe the confinement mechanism in the hadronic phase and meson melting in the plasma phase while the later can measure the energy loss of the jet penetrating through the medium. Most of the previous studies from AdS/CFT are for large ‘t Hooft coupling and large $N_c $ limites.
Our aim is to evaluate the sub-leading terms of strong expansion of heavy-quark potential and jet quenching parameter in N=4SYM plasma from AdS/CFT with world sheet fluctuations.
Applying the AdS/CFT correspondence, the expansion of the heavy-quark potential of the ${\cal N}$ supersymmetric Yang-Mills theory at large $N_c$ is carried out to the sub-leading term in the large 't Hooft coupling at nonzero temperatures. The strong coupling corresponds to the semi-classical expansion of the string-sigma model, the gravity dual of the Wilson loop operator, with the sub-leading term expressed in terms of functional determinants of fluctuations. The contributions of these determinants are evaluated numerically. Meson melting will be discussed . We shall also present our new results about the subleading order correction to the jet quenching parameter from AdS/CFT from world sheet fluctuations.
| Keywords | Heavy quark potential, jet quenching parameter , AdS/CFT, finite coupling |
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Authors
Prof.
Defu Hou
(Central China Normal University)
Mr
Zi-qianf Zhang
(Central China Normal University)
Co-author
Prof.
Hai-cang Ren
(Rockefeller University & Central China Normal University)
