Cosmological redshift as a Doppler effect or metric evolution?

[AWA]

In several threads where I've seen the redshift issue discussed there's been some confusion about this point, Must we treat cosmological redshift as a purely kinematic (relativistic)doppler effect or as the time dymamics of the metric space? Or both views can be made to converge?

 

[Chalnoth]

In several threads where I've seen the redshift issue discussed there's been some confusion about this point, Must we treat cosmological redshift as a purely kinematic (relativistic)doppler effect or as the time dymamics of the metric space? Or both views can be made to converge?

There's no question that for distant objects, one has to take into account the curvature of space-time to get the right answer for the redshift. For nearer objects, this just reduces to a relativistic doppler effect. When you start getting out to around a Hubble radius, however, this starts to become rather wrong and you have to take into account the space-time curvature.