Swampland conjectures in hybrid metric-Palatini gravity

Sadeghi, J.; Gashti, S. Noori; Darabi, F.

doi:10.1016/j.dark.2022.101090

Cited by 10 publications

(2 citation statements)

References 138 publications

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“…Moreover, two conjectures are met for φ 0 = 4 in the range of φ ≤ 2.141 and 9.559 ≤ φ ≤ 11.675. The potential structure for the fourth model Equation ( 41) in Einstein's framework is similar to model III in Equation (32). Since, the SWGC and SSWGC of the swampland program are proportional to the derivatives of higher orders, as is apparent in the Equations ( 5) and (6).…”

Section: Model IIImentioning

confidence: 95%

Scalar Weak Gravity Conjecture in Super Yang-Mills Inflationary Model

2022

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In this article, we want to check four inflation models, namely, composite NJL inflation (NJLI), Glueball inflation (GI), super Yang–Mills inflation (SYMI), and Orientifold inflation (OI), with two conjectures of the swampland program: scalar weak gravity conjecture (SWGC) and strong scalar weak gravity conjecture (SSWGC) since all these models violate the dS swampland conjecture (DSC) but are compatible with further refining de Sitter swampland conjecture (FRDSSC) through manual adjustment of free parameters of the mentioned conjecture. We want to study the simultaneous compatibility of each model with these two new conjectures. Despite being consistent with (FRDSSC), we find that all models are not compatible with the other conjectures of the Swampland program in all regions, and these conjectures are only satisfied in a specific area. Moreover, due to the presence of constant parameter (ϕ0) in the higher orders derivatives, the (SYMI) and (OI) among all the models are more compatible with all conjectures of the swampland program. These models can provide a more significant amount of satisfaction with all of them. They can be suitable and accurate inflation models for a more profound examination of universe developments. We determined a particular region for these models is compatible with (FRDSSC), (SWGC), and (SSWGC) simultaneously.

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Section: Model IIImentioning

confidence: 95%

Scalar Weak Gravity Conjecture in Super Yang-Mills Inflationary Model

2022

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“…Developments in string theory suggest that the string theory landscape of false vacua is vast, so it is natural to ask if the landscape is as vast as allowed by consistent-looking effective field theories. Some authors suggest that that is not the case and that the swampland is, in fact, much larger than the string theory landscape [46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64].…”

Section: Introductionmentioning

confidence: 99%

Cosmic Evolution of the Logarithmic f(R) Model and the dS Swampland Conjecture

et al. 2022

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In this paper, we study the inflationary scenario in logarithmic f(R) gravity, where the rate of inflation roll is constant. On the other hand, our gravitational f(R) model is a polynomial plus a logarithmic term. We take advantage of constant-roll conditions and investigate the cosmic evolution of the logarithmic f(R) gravity. We present a numerical and a graphical study using the model parameters. Additionally, we obtain the corresponding potential by using the constant-roll condition. We obtain the exact value of the potential satisfying the constant-roll conditions. Next, we challenge it with refined swampland conjecture with respect to the Planck data. Finally, we compare our results with the latest observable data.

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