TY - JOUR
T1 - Graceful exit in extended inflation and implications for density perturbations
AU - Crittenden, Robert
AU - Steinhardt, Paul J.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1992/10/22
Y1 - 1992/10/22
N2 - Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P(k) ∝ kn, where n might lie anywhere between 0.5 and 1.0 (whereas, previously, it appeared that the range 1.0>n{greater-than or approximate}0.84 was disallowed).
AB - Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P(k) ∝ kn, where n might lie anywhere between 0.5 and 1.0 (whereas, previously, it appeared that the range 1.0>n{greater-than or approximate}0.84 was disallowed).
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U2 - 10.1016/0370-2693(92)91477-Q
DO - 10.1016/0370-2693(92)91477-Q
M3 - Article
AN - SCOPUS:0009175379
SN - 0370-2693
VL - 293
SP - 32
EP - 36
JO - Physics Letters B
JF - Physics Letters B
IS - 1-2
ER -