scholarly journals OBSERVATION OF DISCRETE OSCILLATIONS IN A MODEL-INDEPENDENT PLOT OF COSMOLOGICAL SCALE FACTOR VERSUS LOOKBACK TIME AND SCALAR FIELD MODEL

2015 ◽  
Vol 149 (4) ◽  
pp. 137 ◽  
Author(s):  
H. I. Ringermacher ◽  
L. R. Mead
Keyword(s):  
Scalar Field ◽  
Field Model ◽  
Factor Versus ◽  
Scale Factor ◽  
Scalar Field Model ◽  
Cosmological Scale ◽  
Model Independent

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 From scalar field theories to supersymmetric quantum mechanics

2017 ◽  
Vol 32 (12) ◽  
pp. 1750073 ◽  
Author(s):  
D. Bazeia ◽  
F. S. Bemfica
Keyword(s):  
Field Theory ◽  
Quantum Mechanics ◽  
Scalar Field ◽  
Field Model ◽  
Supersymmetric Quantum Mechanics ◽  
Field Theories ◽  
Quantum Mechanical ◽  
Scalar Field Theory ◽  
Scalar Field Model ◽  
The Subject

In this work, we report a new result that appears when one investigates the route that starts from a scalar field theory and ends on a supersymmetric quantum mechanics. The subject has been studied before in several distinct ways and here, we unveil an interesting novelty, showing that the same scalar field model may describe distinct quantum mechanical problems.

scholarly journals Magnetic domain wall creep and depinning: A scalar field model approach

2018 ◽  
Vol 97 (6) ◽  
Author(s):  
Nirvana B. Caballero ◽  
Ezequiel E. Ferrero ◽  
Alejandro B. Kolton ◽  
Javier Curiale ◽  
Vincent Jeudy ◽  
...  
Keyword(s):  
Scalar Field ◽  
Domain Wall ◽  
Field Model ◽  
Magnetic Domain ◽  
Magnetic Domain Wall ◽  
Scalar Field Model ◽  
Model Approach
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