Graceful exit in extended inflation and implications for density perturbations

TY - JOUR

T1 - Graceful exit in extended inflation and implications for density perturbations

AU - Crittenden, Robert

AU - Steinhardt, Paul J.

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).

UR - https://www.scopus.com/pages/publications/0009175379

UR - https://www.scopus.com/pages/publications/0009175379#tab=citedBy

U2 - 10.1016/0370-2693(92)91477-Q

DO - 10.1016/0370-2693(92)91477-Q

M3 - Article

SN - 0370-2693

VL - 293

SP - 32

EP - 36

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -