X. Chen, R. Easther, and E. Lim. (2006)cite arxiv:astro-ph/0611645
Comment: 23 pages JHEP-style, 7 Figures. Updated with improved results.
Accepted for publication by JCAP.
R. Easther, and L. McAllister. (2005)cite arxiv:hep-th/0512102
Comment: 56 pages, 9 figures; v2: references added; v3: several small
clarifications, refs added, will match published version in JCAP.