Randall-Sundrum cosmological model with nonminimal derivative coupling of scalar field

2015 ◽  
Author(s):  
Agustina Widiyani ◽  
Agus Suroso ◽  
Freddy P. Zen
Keyword(s):  
Scalar Field ◽  
Cosmological Model ◽  
Derivative Coupling

scholarly journals Quadratic integrals of a multi-scalar cosmological model

2020 ◽  
Vol 35 (10) ◽  
pp. 2050068 ◽  
Author(s):  
Sameerah Jamal
Keyword(s):  
Scalar Field ◽  
Cosmological Model ◽  
Conservation Laws ◽  
Analytical Solutions ◽  
Physical System ◽  
Noether Symmetries ◽  
Spatial Curvature ◽  
Special Case ◽  
Friedmann Robertson Walker ◽  
Field Integral

In the context of Friedmann–Robertson–Walker (FRW) spacetime with zero spatial curvature, we consider a multi-scalar tensor cosmology model under the pretext of obtaining quadratic conservation laws. We propose two new interaction potentials of the scalar field. Integral to this task is the existence of dynamical Noether symmetries which are Lie–Bäcklund transformations of the physical system. Finally, analytical solutions of the field are found corresponding to each new model. In one of the models, we find that the scale factor mimics [Formula: see text]-cosmology in a special case.

Quantum cosmological model with a scalar field as source

1987 ◽  
Vol 125 (8) ◽  
pp. 362-364 ◽  
Author(s):  
Xing Hu ◽  
You Lin Wu
Keyword(s):  
Scalar Field ◽  
Cosmological Model
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