Quintessence background for 4 D Einstein-Gauss-Bonnet black holes

摘要

Our aim in this manuscript is to study 4DEinstein-Gauss-Bonnet (EGB) black hole (BH) surrounded by quintessence matter. We studied some thermodynamical properties of the model including Hawking temperature, entropy, Gibb's free energy and specific heat of the 4DEGB BH surrounded by quintessence matter. It is concluded that the Gibb's free energy is positive for all values of the horizon radiusr+. Therefore the BH is not stable globally. It is also noted that the specific heat forr+rcthe BH is locally unstable.