[789] A. L. Maroto and A. Mazumdar, Phys. Rev. Lett. 84 , 1655 (2000), hep-ph/9904206. [790] R. Kallosh, L. Kofman, A. D. Linde, and A. Van Proeyen, Phys. Rev. D61 , 103503 (2000), hep-th/9907124. [791] G. F. Giudice, A. Riotto, and I. Tkachev, JHEP 11 , 036 (1999), hep-ph/9911302. [792] R. Allahverdi, M. Bastero-Gil, and A. Mazumdar, Phys. Rev. D64 , 023516 (2001), hep- ph/0012057. [793] H. P. Nilles, M. Peloso, and L. Sorbo, Phys. Rev. Lett. 87 , 051302 (2001), hep-ph/0102264. [794] H. P. Nilles, M. Peloso, and L. Sorbo, JHEP 04 , 004 (2001), hep-th/0103202. [795] G. F. Giudice, A. Riotto, and I. I. Tkachev, JHEP 06 , 020 (2001), hep-ph/0103248. [796] S. Khlebnikov, L. Kofman, A. D. Linde, and I. Tkachev, Phys. Rev. Lett. 81 , 2012 (1998), hep-ph/9804425. [797] J. Garcia-Bellido, D. Y. Grigoriev, A. Kusenko, and M. E. Shaposhnikov, Phys. Rev. D60 , 123504 (1999), hep-ph/9902449. [798] J. M. Cornwall and A. Kusenko, Phys. Rev. D61 , 103510 (2000), hep-ph/0001058. [799] J. M. Cornwall, D. Grigoriev, and A. Kusenko, Phys. Rev. D64 , 123518 (2001), hep- ph/0106127. [800] B. A. Bassett, D. I. Kaiser, and R. Maartens, Phys. Lett. B455 , 84 (1999), hep-ph/9808404. [801] R. Maartens and B. A. Bassett, Class. Quant. Grav. 15 , 705 (1998), gr-qc/9704059. [802] B. A. Bassett, F. Tamburini, D. I. Kaiser, and R. Maartens, Nucl. Phys. B561 , 188 (1999), hep-ph/9901319. [803] F. Finelli and R. H. Brandenberger, Phys. Rev. D62 , 083502 (2000), hep-ph/0003172. [804] K. Jedamzik and G. Sigl, Phys. Rev. D61 , 023519 (2000), hep-ph/9906287. [805] B. A. Bassett, C. Gordon, R. Maartens, and D. I. Kaiser, Phys. Rev. D61 , 061302 (2000), hep-ph/9909482. [806] N. Shuhmaher and R. Brandenberger, Phys. Rev. D73 , 043519 (2006), hep-th/0507103. [807] J. F. Dufaux, G. N. Felder, L. Kofman, M. Peloso, and D. Podolsky, JCAP 0607 , 006 (2006), hep-ph/0602144. [808] J. F. Dufaux, A. Bergman, G. N. Felder, L. Kofman, and J.-P. Uzan, Phys. Rev. D76 , 123517 (2007), 0707.0875. [809] J.-F. Dufaux, Phys. Rev. Lett. 103 , 041301 (2009), 0902.2574. [810] K. A. Olive, G. Steigman, and T. P. Walker, Phys. Rept. 333 , 389 (2000), astro-ph/9905320. 271