Holographic study of drag on a probe quark in Reissner–Nordstrom AdS black hole with Gauss-Bonnet gravity and cloud of string

In this work, we study the drag experienced by a probe quark in charged AdS Gauss-Bonnet (GB) gravity with an attached cloud of string. The dissipative force is calculated using gauge/gravity duality with the consideration of the Reissner-Nordstrom AdS Gauss-Bonnet with cloud of string as dual bulk. The drag is studied in terms of the temperature (T), Gauss-Bonnet constant (α), potential Φ and the density of the string cloud (a). The drag experienced by the external quark is found to increase with increase in the corresponding parameters T, α, Φ and a.