Speaker
Mr
Himanshu Khanchandani
(Indian Institute of Technology Roorkee)
Description
In gauge-gravity duality, the heavy quark potential at finite temperature is usually
calculated with the pure AdS background, which does not take care of the renormalization
group (RG) running in the gauge theory part. As a consequence, the potential obtained
does not yield any confining term in both confined as well as deconfined phase. Following the
developments in Klebanov-Strassler geometry, we employ a geometry, which captures the RG
flow similar to QCD, to obtain the
complex heavy quark potential by analytically continuing the string configurations into the
complex plane. In addition to the attractive terms, the potential has confining
terms both at $T = 0$ and $T \neq 0 $, compared to the calculations usually done in the
literature, where only the Coulomb-like term is present in the deconfined phase. The
potential also develops an (negative) imaginary part above a critical separation, $r_c (=
0.53 z_h )$. Moreover, our potential exhibits a behavior different from the usual Debye
screening obtained from perturbation theory.
Primary author
Dr
Binoy Patra
(Indian Institute of Technology)
Co-author
Mr
Himanshu Khanchandani
(Indian Institute of Technology Roorkee)
