摘要
The effective vacuum energy density contributed by the non-trivial contortion distribution and the bare vacuumenergy density can be viewed as the energy density of the auxiliary quintessence field potential.We find thatthe negative bare vacuum energy density from string landscape leads to a monotonically decreasing quintessence potentialwhile the positive one from swampland leads to the metastable or stable de Sitter-like potential.Moreover,thenon-trivial Brans-Dicke like coupling between the quintessence field and gravitation field is necessary in the lattercase.
作者
Qi Li
Jing Li
Yongxiang Zhou
Xun Xue
李祁;李静;周永香;薛迅(Department of Physics,East China Normal University,Shanghai 200241,China;Center for Theoretical Physics,Xinjiang University,Urumqi 830046,China)
基金
Supported by the National Natural Science Foundation of China(11775080,11865016)。
