Practical tools for third order cosmological perturbations

Sep, 2009
17 pages
Published in:
  • JCAP 11 (2009) 012
e-Print:

Citations per year

200920132017202120241530
Abstract: (arXiv)
We discuss cosmological perturbation theory at third order, deriving the gauge transformation rules for metric and matter perturbations, and constructing third order gauge invariant quantities. We present the Einstein tensor components, the evolution equations for a perfect fluid, and the Klein-Gordon equation at third order, including scalar, vector and tensor perturbations. In doing so, we also give all second order tensor components and evolution equations in full, exhilarating generality.
  • 98.80.Jk
  • 98.80.Cq