scholarly journals Second-order corrections to slow-roll inflation in the brane cosmology

2004 ◽  
Vol 70 (2) ◽  
Author(s):  
Kyong Hee Kim ◽  
Hyung Won Lee ◽  
Yun Soo Myung
Keyword(s):  
Second Order ◽  
Brane Cosmology ◽  
Slow Roll ◽  
Slow Roll Inflation

scholarly journals Generalized slow-roll inflation

2000 ◽  
Vol 269 (4) ◽  
pp. 209-213 ◽  
Author(s):  
Valerio Faraoni
Keyword(s):  
Slow Roll ◽  
Slow Roll Inflation

scholarly journals THE N-TACHYON ASSISTED INFLATION

2007 ◽  
Vol 22 (36) ◽  
pp. 2737-2748 ◽  
Author(s):  
HARVENDRA SINGH
Keyword(s):  
Open String ◽  
Slow Roll ◽  
Slow Roll Inflation

In continuation of the papers hep-th/0505012 and hep-th/0508101 we investigate the consequences when N open-string tachyons roll down simultaneously. We demonstrate that the N-tachyon system coupled to gravity does indeed give rise to the assisted slow-roll inflation.

scholarly journals NATURAL SLOW-ROLL INFLATION

1996 ◽  
Vol 11 (08) ◽  
pp. 631-646 ◽  
Author(s):  
R.F. LANGBEIN ◽  
K. LANGFELD ◽  
H. REINHARDT ◽  
L. von SMEKAL
Keyword(s):  
Phase Change ◽  
Early Universe ◽  
Slow Roll ◽  
Slow Roll Inflation

It is shown that the nonperturbative dynamics of a phase change to the nontrivial phase of λφ4-theory in the early universe can give rise to slow-rollover inflation without recourse to unnaturally small couplings.

scholarly journals POSSIBLY LARGE CORRECTIONS TO THE INFLATIONARY OBSERVABLES

2008 ◽  
Vol 23 (12) ◽  
pp. 857-862 ◽  
Author(s):  
N. BARTOLO ◽  
A. RIOTTO
Keyword(s):  
Second Order ◽  
Hubble Rate ◽  
Slow Roll ◽  
Theoretical Predictions

We point out that the theoretical predictions for the inflationary observables may be generically altered by the presence of fields which are heavier than the Hubble rate during inflation and whose dynamics is usually neglected. They introduce corrections which may be easily larger than both the second-order contributions in the slow-roll parameters and the accuracy expected in the forthcoming experiments.

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