Sen, R.Aygun, S.2025-01-272025-01-272017978-0-7354-1483-90094-243Xhttps://doi.org/10.1063/1.4976455https://hdl.handle.net/20.500.12428/2632932nd International Physics Congress of Turkish-Physical-Society (TPS) -- SEP 06-09, 2016 -- Bodrum, TURKEYIn this study, we have solved Einstein field equations for Bianchi type I universe model in Lyra manifold with quadratic equation of state (EoS) p = alpha rho(t)(2) - rho(t). Where alpha not equal 0 is an important constant. Cosmic pressure, density and displacement vector (beta(2)) are related with a constant. In this study beta(2) is a decreasing function of time and behaves like a cosmological constant. These solutions agree with the studies of lialford, Pradhan and Singh, Aygun et al., Agarwal et al., Yadav and liaque as well as SN la observations.eninfo:eu-repo/semantics/closedAccessScalar-Tensor TheoryCosmological ModelsConference Object181510.1063/1.4976455N/AWOS:0004352051001112-s2.0-85015979419Q4