Speaker: Nathan Gomes Caldeira

Affiliation:
Universidade Federal do Rio de Janeiro-UFRJ

Title:
Fluctuation and Dissipation from a Deformed String/Gauge Duality Model

Abstract:
Using a Lorentz invariant deformed string/gauge duality model at finite temperature we calculate the thermal fluctuation and the corresponding linear response, verifying the fluctuation-dissipation theorem. The deformed AdS_5 is constructed by the insertion of an exponential factor exp(k/r^2) in the metric. We also compute the string energy and the mean square displacement in order to investigate the ballistic and diffusive regimes. Furthermore we have studied the dissipation and the linear response in the zero temperature scenario.