In consistent R T-coupled f(R,T) cosmology, dust allows accelerated expansion in a Hubble window violating only the strong energy condition, with an upper bound on σ from the 1 + σ T > 0 requirement.
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Energy conditions in consistent perfect fluid cosmology
In consistent R T-coupled f(R,T) cosmology, dust allows accelerated expansion in a Hubble window violating only the strong energy condition, with an upper bound on σ from the 1 + σ T > 0 requirement.