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
2009 ◽  
Vol 79 (10) ◽  
Author(s):  
Philippe Brax ◽  
Carsten van de Bruck ◽  
Lisa M. H. Hall ◽  
Joel M. Weller

2017 ◽  
Vol 95 (4) ◽  
Author(s):  
Jack Gegenberg ◽  
Shohreh Rahmati ◽  
Sanjeev S. Seahra

2009 ◽  
Vol 18 (08) ◽  
pp. 1291-1301 ◽  
Author(s):  
M. R. SETARE ◽  
J. SADEGHI ◽  
A. R. AMANI

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.


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

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

2007 ◽  
Vol 22 (36) ◽  
pp. 2737-2748 ◽  
Author(s):  
HARVENDRA SINGH

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.


1996 ◽  
Vol 11 (08) ◽  
pp. 631-646 ◽  
Author(s):  
R.F. LANGBEIN ◽  
K. LANGFELD ◽  
H. REINHARDT ◽  
L. von SMEKAL

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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