# dark energy

13 Jan 2012what do the cosmological constant and dark energy have in common? why are they different? why is it wrong to say that \(\Lambda\) is just DE with \(w=-1\)? could there be a cosmology with \(\Lambda\) and DE at the same time?

what do the cosmological constant and dark energy have in common? why are they different? why is it wrong to say that \(\Lambda\) is just DE with \(w=-1\)? could there be a cosmology with \(\Lambda\) and DE at the same time?