The effective potential originating from swampland and the non-trivial Brans-Dicke coupling |
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Authors: | Qi Li Jing Li Yongxiang Zhou Xun Xue |
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Institution: | 1. Department of Physics, East China Normal University, Shanghai 200241, China2. Center for Theoretical Physics, Xinjiang University, Urumqi 830046, China |
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Abstract: | The effective vacuum energy density contributed by the non-trivial contortion distribution and the bare vacuum energy density can be viewed as the energy density of the auxiliary quintessence field potential. We find that the negative bare vacuum energy density from string landscape leads to a monotonically decreasing quintessence potential while the positive one from swampland leads to the metastable or stable de Sitter-like potential. Moreover, the non-trivial Brans-Dicke like coupling between the quintessence field and gravitation field is necessary in the latter case. |
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Keywords: | quintessence Lorentz violation landscape swampland Brans-Dicke coupling |
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