Kinematic Constraints to the Key Inflationary Observables

Details Kinematic Constraints to the Key Inflationary Observables Kinematic Constraints to the Key Inflationary Observables

2000-06-22

arxiv.org/abs/astro-ph/0006321v1

Phys.Rev. D64 (2001) 023506

Astronomy and Astrophysics

Astrophysics

11 pages LaTeX with 4 eps figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevD.64.023506

The observables $T/S$ and $n-1$ are key to testing and understanding inflation. ($T$, $S$, and $n-1$ respectively quantify the gravity-wave and density-perturbation contributions to CMB anisotropy and the deviation of the density perturbations from the scale-invariant form.) Absent a standard model, there is no definite prediction for, or relation between, $T/S$ and $n-1$. By reformulating the equations governing inflation we show that models generally predict $T/S \approx -5(n-1)$ or 0, and in particular, if $n>0.85$, $T/S$ is expected to be $>10^{-3}$.

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