Energy Conditions of the Five Dimensional with NMDC and Acelerating Universe

6th Asian Physics Symposium

Hikmawan, G.^1 ; Suroso, A.^1,2 ; Zen, F.P.^1,2

Theoretical Physics Laboratory, THEPI Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung

40132, Indonesia^1

Indonesia Center for Theoretical and Mathematical Physics (ICTMP), Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung

40132, Indonesia^2

关键词: Cosmological modeling;    Curvature tensors;    Energy condition;    Extra dimensions;    Non-minimal derivative couplings;    Scalar fields;    Three dimensional space;    Weak energy conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012049/pdf
DOI  :  10.1088/1742-6596/739/1/012049

来源: IOP

【 摘 要 】

The Energy condition is studied for five dimensional cosmological model with nonminimal derivative coupling (NMDC) between scalar field and curvature tensor. We assume that the scale factors of three dimensional space (a(t)) and the extra dimension (b(t)) is related by b(t) = (a(t))γ, where γ is a constant. We apply the Null Energy Condition (NEC), Weak Energy Condition (WEC), Strong Energy Condition (SEC) and Dominant Energy Condition (DEC) to our model and investigate some constraint in order the energy condition violated. The constraint that we found is appropriate with cosmological model in which the four-dimensional universe expands with positive acceleration and the extra dimension decays.