The effective potential originating from swampland and the non-trivial Brans-Dicke coupling

• 作者: Jing Li Qi Li Xun Xue Yongxiang Zhou
• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: PARTICLE AND NUCLEAR ASTROPHYSICS AND COSMOLOGY
• 页码范围: 217-226
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-1137/abab8e

摘要

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.