Current browse context:
astro-ph.CO
Change to browse by:
References & Citations
Astrophysics > Cosmology and Nongalactic Astrophysics
Title: Quintessential interpretation of the evolving dark energy in light of DESI
(Submitted on 8 Apr 2024 (v1), last revised 26 Apr 2024 (this version, v2))
Abstract: The recent result of Dark Energy Spectroscopic Instrument (DESI) in combination with other cosmological data shows evidence of the evolving dark energy parameterized by $w_0w_a$CDM model. We interpret this result in terms of a quintessential scalar field and demonstrate that it can explain the DESI result even though it becomes eventually phantom in the past. Relaxing the assumption on the functional form of the equation-of-state parameter $w=w(a)$, we also discuss a more realistic quintessential model. The implications of the DESI result for Swampland conjectures, cosmic birefringence, and the fate of the Universe are discussed as well.
Submission history
From: Yuichiro Tada [view email][v1] Mon, 8 Apr 2024 17:58:02 GMT (102kb,D)
[v2] Fri, 26 Apr 2024 08:43:54 GMT (133kb,D)
Link back to: arXiv, form interface, contact.