Energy conditions and cosmic acceleration
Energy conditions and cosmic acceleration
In general relativity, the energy conditions are invoked to restrict general energy-momentum tensors ${T}_{\ensuremath{\mu}\ensuremath{\nu}}$ in different frameworks, and to derive general results that hold in a variety of general contexts on physical grounds. We show that in the standard Friedmann-Lema\^{\i}tre-Robertson-Walker (FLRW) approach, where the equation of state of the cosmological …