Aygun, SezginAktas, Arzu2025-01-272025-01-2720242731-80952731-8109https://doi.org/10.1007/s40995-024-01652-6https://hdl.handle.net/20.500.12428/22118In this study, normal, phantom scalar fields (SF) and massive scalar field (MSF) solutions were investigated in f(R,T) andGeneral Relativity theories (GRT) for inhomogeneous and anisotropic Ruban space-time, which is believed to represent thefirst moments of the universe. Solutions were obtained by using the A(x,t)=(xB(t))(n) relation between the metricpotentials of the Ruban universe and the scalar potential models V(phi)=V-0 and V(phi)=V(0)e-(a phi(t)). Obtained results aresupported by graphics. The solutions obtained for scalar fields are compatible with the studies of Aygu n (Gravit Cosmol24:302-307, 2018) and Singh and Singh (Astrophys Space Sci 356:153-162, 2015).eninfo:eu-repo/semantics/closedAccessRuban universeScalar fieldf(RT) theoryArticle10.1007/s40995-024-01652-6N/AWOS:0012368168000052-s2.0-85194925341Q4