Background dynamics and observational constraints of spatially flat and non-flat Λ(t)CDM models from H(z) and DESI DR2 BAO measurements
Context. Dynamical vacuum models provide a minimal phenomenological extension of the standard Λ cold dark matter (ΛCDM) model in which the vacuum energy density evolves with cosmic time, potentially affecting late-time expansion. Aims. We investigated the background evolution of spatially flat and n...
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| Formato: | Artigo |
| Idioma: | Inglês |
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EDP Sciences
2026-06-01
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| Series: | Astronomy & Astrophysics |
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| Acceso en liña: | https://www.aanda.org/articles/aa/full_html/2026/06/aa59718-26/aa59718-26.html |
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