Thermodynamic properties of non-singular Hayward black hole through the lens of minimal gravitational decoupling

Abstract

In this article, we formulate three different solutions by extending the regular Hayward black hole in the background of gravitational decoupling, a well-known approach to extend the existing solutions to the more generalized domain. To do this, we consider a seed perfect fluid spherical source and add an extra matter content in the Einstein’s field equations. This makes the gravitational equations more complex and thus we are required to implement the decoupling technique, resulting in two subsystems. For solving first of them representing perfect fluid setup, we consider Hayward black hole. As the other system is concerned, three constraints are taken into account to find the deformation function which completes the solution. A particular combination of both these solutions leads to a novel extension analogous to the total fluid distribution. Afterwards, we choose multiple values of the decoupling parameter to graphically analyze the physical attributes for our resulting solutions. Some thermodynamic characteristics are also discussed. Finally, we conclude that the stability for all three models remains preserved according to the specific heat and Hessian matrix criteria.