D. Mulryne, D. Seery, and D. Wesley. (2009)cite arxiv:0909.2256
Comment: 24 pages, 4 colour figures; uses iopart.cls. v2: Erroneous statements
about delta N method in Sec. 2 removed. Correction to gauge transformation in
Eq. (12) brings numerical results of Sec. 4 into better agreement with the
delta N formula. Conclusions remain the same. v3: minor changes.
M. Alishahiha, E. Silverstein, and D. Tong. (2004)cite arxiv:hep-th/0404084
Comment: 30 pages latex. v2: references added. v3: correction in three point
function. v4: sign of non-Gaussianity corrected; fNL is negative.
E. Silverstein, and D. Tong. (2003)cite arxiv:hep-th/0310221
Comment: 39 pages. v2: References added. v3: comments on conformal and
curvature couplings revised.
D. Lyth, and Y. Rodriguez. (2005)cite arxiv:astro-ph/0502578
Comment: Latex file in Revtex style. 13 pages, 1 figure. v2: minor changes.
Discussion in Subsection VI-A enlarged. References added. Conclusions
unchanged. v3: minor typographic changes. Correlated and uncorrelated \chi^2
non-gaussianity concepts and consequences introduced. Section VI-A enlarged.
Small change in Table I. References updated and added. Conclusions unchanged.
Version to appear in Physical Review D.