## Abstract

The de Sitter Swampland conjecture compels us to consider dark energy models where λ(ϕ)≡|∇_{ϕ}V|/V is bounded below by a positive constant. Moreover, it has been argued for Quintessence models that the constant λ scenario is the least constrained. Here we demonstrate that increasing λ only exacerbates existing tension in the Hubble constant H_{0}. The identification of dark energy models that both evade observational bounds and alleviate H_{0} tension constitutes a robust test for the Swampland program.

Original language | English |
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Article number | 134907 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 797 |

DOIs | |

Publication status | Published - 10 Oct 2019 |

Externally published | Yes |

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