摘要
In this study, we consider cosmological models driven by several canonical or noncanonical scalar fields, and we show the manner in which twinlike models for a canonical model can be constructed from noncanonical ones using the superpotential method. We conclude that it is possible to construct twinlike models for multifield cosmological models, even with a nonzero spatial curvature.This work extends the discussions of [D. Bazeia, and J. D. Dantas, Phys. Rev. D 85, 067303(2012)] to cases with multi scalar fields and with non-vanished spatial curvature, by using a different superpotential method.
In this study, we consider cosmological models driven by several canonical or noncanonical scalar fields, and we show the manner in which twinlike models for a canonical model can be constructed from noncanonical ones using the superpotential method. We conclude that it is possible to construct twinlike models for multifield cosmological models, even with a nonzero spatial curvature.This work extends the discussions of [D. Bazeia, and J. D. Dantas, Phys. Rev. D 85, 067303（2012）] to cases with multi scalar fields and with non-vanished spatial curvature, by using a different superpotential method.
基金
supported by the National Natural Science Foundation of China(Grant Nos.11605127,11522541,11405121,and 11375075)
China Postdoctoral Science Foundation(Grant No.2016M592770)
关键词
宇宙论
模特儿
空间弯曲
模型
构造
cosmological twinlike models
superpotential method
noncanonical scalar field
