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gr-qc2020★ 3 cited
Scalar and vector perturbations in a universe with nonlinear perfect fluid
Ezgi Canay, Ruslan Brilenkov, Maxim Eingorn +2
We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear e…
gr-qc2020★ 15 cited
Formalizing Slow-roll Inflation in Scalar-Tensor Theories of Gravitation
Kemal Akın, A. Savaş Arapoğlu, A. Emrah Yükselci
The viability of slow-roll approximation is examined by considering the structure of phase spaces in scalar-tensor theories of gravitation and the analysis is exemplified with a no…