Recent content by HashKetchum

Thank you! Managed to crack it :) slightly stuck for the units all being 1/time^2 though, do φ and a just have units of time? If so then surely φ'' is unitless?

Thanks, i spotted the wrong partial derivative at the start but still get this? I wish H was a log :(

Do you mean the units of the phi'', the phi' and the dv/dphi terms should all be 1/time^2?

This is my working, if anyone could point out where I've gone wrong id be really grateful!

Hello, I am having trouble deriving the equation of motion for the quintessence field. The equation of motion which I am meant to get at the end point is: (with ' denoting derivative w.r.t time) φ'' + 3Hφ' + dV/dφ = 0 Using the inflaton lagrangian: (although with a generic potential V(φ)...