Confinement in de Sitter Space and the Swampland

Mishra, Rashmish K.

doi:10.48550/arxiv.2207.12364

Cited by 2 publications

(2 citation statements)

References 34 publications

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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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Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…We are grateful to Rashmish Mishra for insight and discussion about this point. For more details see[121].…”

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confidence: 99%

Swampland bounds on dark sectors

Montero

Muñoz

Obied

2022

J. High Energ. Phys.

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We use Swampland principles to theoretically disfavor regions of the parameter space of dark matter and other darkly charged particles that may exist. The Festina Lente bound, the analogue of the Weak-Gravity conjecture in de Sitter, places constraints on the mass and charge of dark particles, which here we show cover regions in parameter space that are currently allowed by observations. As a consequence, a broad set of new ultra-light particles are in the Swampland, independently of their cosmic abundance, showing the complementarity of Quantum Gravity limits with laboratory and astrophysical studies. In parallel, a Swampland bound on the UV cutoff associated to the axion giving a Stückelberg photon its longitudinal mode translates to a new constraint on the kinetic mixings and masses of dark photons. This covers part of the parameter space targeted by upcoming dark-photon direct-detection experiments. Moreover, it puts astrophysically interesting models in the Swampland, including freeze-in dark matter through an ultra-light dark photon, as well as radio models invoked to explain the 21-cm EDGES anomaly.

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Confinement in de Sitter Space and the Swampland

Cited by 2 publications

References 34 publications

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

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

Swampland bounds on dark sectors

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