S-dual quintessence, the Swampland, and the DESI DR2 results
Abstrak
We propose a dark energy model in which a quintessence field ϕ rolls near the vicinity of a local maximum of its potential characterized by the simplest S self-dual form V(ϕ)=Λsech(2ϕ/Mp), where Mp is the reduced Planck mass and Λ∼10−120Mp4 is the cosmological constant. We confront the model with Swampland ideas and show that the S-dual potential is consistent with the distance conjecture, the de Sitter conjecture, and the trans-Planckian censorship conjecture. We also examine the compatibility of this phenomenological model with the intriguing DESI DR2 results and show that the shape of the S-dual potential is almost indistinguishable from the axion-like potential, V(ϕ)=ma2fa2[1+cos(ϕ/fa)], with ma and fa parameters fitted by the DESI Collaboration to accommodate the DR2 data. The self-dual potential has the advantage that one starts at the self-dual point and this is a theoretical motivation, because as the universe cools off the Z2 symmetry gets broken leading to a natural rolling away from the symmetric point.
Topik & Kata Kunci
Penulis (3)
Luis A. Anchordoqui
Ignatios Antoniadis
Dieter Lüst
Akses Cepat
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Cek di sumber asli →- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.1016/j.physletb.2025.139632
- Akses
- Open Access ✓