The Effective Potential Originating from Swampland and the Non-trivial Brans-Dicke Coupling
| Autor: | Jing Li, Qi Li, Yongxiang Zhou, Xun Xue |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Coupling Nuclear and High Energy Physics Physics::General Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Field (physics) 010308 nuclear & particles physics FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics General Relativity and Quantum Cosmology (gr-qc) Swampland 01 natural sciences String (physics) General Relativity and Quantum Cosmology Vacuum energy De Sitter universe Quantum electrodynamics 0103 physical sciences Energy density 010306 general physics Instrumentation Astrophysics - Cosmology and Nongalactic Astrophysics Quintessence |
| DOI: | 10.48550/arxiv.2003.09121 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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