Further Refining the de Sitter Swampland Conjecture

• Published in: Fortschritte der Physik 2019-01, Vol.67 (1-2), p.n/a
• Main Authors: Andriot, David, Roupec, Christoph
• Format: Article
• Language: English
• Subjects: Data points; Supergravity
• ISSN: 0015-8208; 1521-3978
• DOI: 10.1002/prop.201800105

We propose an alternative refined de Sitter conjecture. It is given by a natural condition on a combination of the first and second derivatives of the scalar potential. We derive our conjecture in the same weak coupling, semi‐classical regime where the previous refined de Sitter conjecture was derived, using the same tools together with a few more assumptions that we discuss. We further test and constrain free parameters in our conjecture using data points of a classical type IIA supergravity setup. Interestingly, our conjecture easily accommodates slow‐roll single field inflation with a concave potential, favored by observations. The standard quintessence potential is in tension with our new conjecture, and we thus propose a different type of quintessence model. An alternative refined de Sitter conjecture is proposed. It is given by a natural condition on a combination of the first and second derivatives of the scalar potential. The conjecture adressed here is derived in the same weak coupling, semi‐classical regime as the previous refined de Sitter conjecture, using the same tools together with a few more discussed assumptions. The authors further test and constrain free parameters in their conjecture using data points of a classical type IIA supergravity setup. Interestingly, the conjecture easily accommodates slow‐roll single field inflation with a concave potential, favored by observations. The standard quintessence potential is in tension with the authors new conjecture, and they thus propose a different type of quintessence model.