Effective Einstein Cosmological Spaces for Non-Minimal Modified Gravity

摘要: Certain off-diagonal vacuum and nonvacuum configurations in Einstein gravity can mimic physical effects of modified gravitational theories $ f(R,T,R_{\mu\nu}T^{\mu\nu})$ type. We prove this statement by constructing exact approximate solutions which encode certain models covariant Ho\v rava type with dynamical Lorentz symmetry breaking. Off-diagonal generalizations de Sitter nonolonomic $\Lambda$CDM universes are constructed generated through nonlinear polarization fundamental constants model interactions non-constant exotic fluids effective matter. The problem possible matter instability for such deformations (modified) is discussed.