scholarly journals Study of non-canonical scalar field model using various parametrizations of dark energy equation of state

2015 ◽  
Vol 75 (6) ◽  
Author(s):  
Abdulla Al Mamon ◽  
Sudipta Das
Keyword(s):  
Dark Energy ◽  
Scalar Field ◽  
Equation Of State ◽  
Energy Equation ◽  
Field Model ◽  
Scalar Field Model ◽  
Canonical Scalar Field

scholarly journals Two-scalar-field model for the interaction of dark energy and dark matter

2012 ◽  
Vol 86 (10) ◽  
Author(s):  
Orfeu Bertolami ◽  
Pedro Carrilho ◽  
Jorge Páramos
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Scalar Field ◽  
Field Model ◽  
Scalar Field Model

scholarly journals A COMPARISON OF QUINTESSENCE AND NON-LINEAR BORN–INFELD SCALAR FIELD USING GOLD SUPERNOVA DATA

2006 ◽  
Vol 15 (11) ◽  
pp. 1947-1961 ◽  
Author(s):  
WEI FANG ◽  
H. Q. LU ◽  
B. LI ◽  
K. F. ZHANG
Keyword(s):  
Scalar Field ◽  
Equation Of State ◽  
Field Model ◽  
State Parameter ◽  
Scale Factor ◽  
Scalar Field Model ◽  
Equation Of State Parameter ◽  
Non Linear ◽  
Quintessence Model

We study the Non-Linear Born–Infeld (NLBI) scalar field model and quintessence model with two different potentials (V(ϕ) = -sϕ and [Formula: see text]). We investigate the differences between these two models. We explore the equation of state parameter w and the evolution of scale factor a(t) in both the NLBI scalar field and quintessence model. The present age of universe and the transition redshift are also obtained. We use the Gold dataset of 157 SN-Ia to constrain the parameters of the two models. All the results show that the NLBI model is slightly superior to the quintessence model.

scholarly journals Ghost Chaplygin scalar field model of dark energy

2013 ◽  
Vol 91 (1) ◽  
pp. 54-59 ◽  
Author(s):  
F. Adabi ◽  
K. Karami ◽  
M. Mousivand
Keyword(s):  
Dark Energy ◽  
Scalar Field ◽  
Field Model ◽  
Accelerated Expansion ◽  
Scalar Field Model ◽  
Ghost Dark Energy ◽  
Energy Models ◽  
Expansion Of The Universe ◽  
The Universe ◽  
Friedmann Robertson Walker

We investigate the correspondence between the ghost and Chaplygin scalar field dark energy models in the framework of Einstein gravity. We consider a spatially nonflat Friedmann–Robertson–Walker universe containing dark energy that interacts with dark matter. We reconstruct the potential and the dynamics for the Chaplygin scalar field model according to the evolutionary behavior of ghost dark energy, which can describe the phantomic accelerated expansion of the universe.

Sign in / Sign up

Export Citation Format

Share Document