Holographic Brownian Motion

by Dr Fatemeh Pourasadollah (Mazandaran University, Babolsar, Iran)

Wednesday 20 Jul 2016, 15:00 → 16:00 Asia/Tehran

Accelerator Seminar Room (Larak)

Heavy-ion collision experiments at RHIC are believed to create a strongly coupled quark gluon plasma (sQGP). One of the current challenges in theoretical particle physics is to compute the properties of this strongly coupled plasma. QGPs can be thought of as a soup of quarks and gluons. A heavy quark immersed in this fluid, with small fluctuations due to its interaction with constituent of QGP, undergoes the Brownian motion at finite temperature. The AdS/CFT correspondence can be utilized to investigate the Brownian motion of this particle. According to this gauge/gravity duality, a gravitational analog of a quark moving on the boundary is achieved by introducing a fundamental open string attached to the boundary of a bulk black hole. If we consider different gravity theories, we know that strings live in a black hole background and excitation of the modes is done by Hawking radiation of black hole. Therefore, different theories of gravity can be associated with various plasma in the boundary. Thus, quarks moving in plasmas which their holographic duals are several different black holes, will be discussed.