scholarly journals Constraining slow-roll inflation in the presence of dynamical dark energy

2008 ◽  
Vol 660 (4) ◽  
pp. 287-292 ◽  
Author(s):  
Jun-Qing Xia ◽  
Xinmin Zhang
Keyword(s):  
Dark Energy ◽  
Slow Roll ◽  
Dynamical Dark Energy ◽  
Slow Roll Inflation

scholarly journals Slow-roll inflation in the presence of a dark energy coupling

2009 ◽  
Vol 79 (10) ◽  
Author(s):  
Philippe Brax ◽  
Carsten van de Bruck ◽  
Lisa M. H. Hall ◽  
Joel M. Weller
Keyword(s):  
Dark Energy ◽  
Energy Coupling ◽  
Slow Roll ◽  
Slow Roll Inflation

scholarly journals Big bounce, slow-roll inflation, and dark energy from conformal gravity

2017 ◽  
Vol 95 (4) ◽  
Author(s):  
Jack Gegenberg ◽  
Shohreh Rahmati ◽  
Sanjeev S. Seahra
Keyword(s):  
Dark Energy ◽  
Conformal Gravity ◽  
Slow Roll ◽  
Slow Roll Inflation ◽  
Big Bounce

scholarly journals RECONSTRUCTING A STRING-INSPIRED NONMINIMALLY COUPLED QUINTOM MODEL

2009 ◽  
Vol 18 (08) ◽  
pp. 1291-1301 ◽  
Author(s):  
M. R. SETARE ◽  
J. SADEGHI ◽  
A. R. AMANI
Keyword(s):  
Dark Energy ◽  
Scalar Field ◽  
String Theory ◽  
Scalar Curvature ◽  
Recent Work ◽  
Nonminimal Coupling ◽  
Tachyon Field ◽  
Dynamical Dark Energy

Motivated by the recent work of Zhang and Chen,1we generalize their work to the nonminimally coupled case. We consider a quintom model of dark energy with a single scalar field T given by a Lagrangian inspired by a tachyonic Lagrangian in string theory. We consider nonminimal coupling of the tachyon field to the scalar curvature, and then we reconstruct this model in the light of three forms of parametrization for dynamical dark energy.

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 Dynamical dark energy in light of the latest observations

2017 ◽  
Vol 1 (9) ◽  
pp. 627-632 ◽  
Author(s):  
Gong-Bo Zhao ◽  
Marco Raveri ◽  
Levon Pogosian ◽  
Yuting Wang ◽  
Robert G. Crittenden ◽  
...  
Keyword(s):  
Dark Energy ◽  
Dynamical Dark Energy

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.

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