Anisotropic tolman V solutions by decoupling approach in f(R,T ²) gravity

Abstract

This paper investigates the behavior of anisotropic static spheres that are constructed by employing a minimal geometric deformation in the framework of f(R,T^{2}) gravity ($T^{2}=T_{\zeta\nu}T^{\zeta\nu}$, $R$ is the Ricci scalar and $T_{\zeta\nu}$ is the energy-momentum tensor). We consider a spherical setup with two sources: seed and additional. It is assumed that the seed source is isotropic whereas the new source is responsible for inducing anisotropy. We deform the $g_{rr}$ component to split the field equations into two sets. The first array corresponds to the isotropic solution whereas the second set contains the effect of the anisotropic source. The system related to isotropic source is determined by the metric potentials of Tolman V solution while three solutions of the second set are constructed corresponding to three different constraints. The physical acceptability of all solutions is checked through energy conditions by employing the mass and radius of PSR J1614-2230 star. We also examine the stability, mass, compactness and redshift of the obtained solutions. We conclude that first two solutions satisfy the viability and stability criteria only for small values of the decoupling parameter while third solution is stable for its all possible values.

Study of decoupled gravastars in energy–momentum squared gravity

“…We have studied various attributes of charged as well as uncharged gravastar solutions [9]. Recently, Sharif and his collaborators studied decoupled solutions [10] as well as the impact of charge on complexity of static sphere in the same theory [11].…”

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“…We have explored different attributes of gravastar solutions in the presence/absence of electromagnetic field [13]. Recently, Sharif and his collaborators computed solutions through minimal geometric deformation [14] and studied the complexity of charged static sphere as well as uncharged static cylinder in this gravity [15].…”