Can a late-time cosmological model based on baby universe absorption explain the z-variation of w?
Fuente:
arXiv
Salvato in:
| Autori principali: | , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2026
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866916013286621184 |
|---|---|
| author | Ambjorn, Jan Watabiki, Yoshiyuki |
| author_facet | Ambjorn, Jan Watabiki, Yoshiyuki |
| contents | We point out that a simple late-time cosmological model where our Universe can absorb "baby universes" explains the exponential expansion of our universe without the need of a cosmological constant and leads to a z-dependence of the parameter w(z) in the equation of state. In this model w(z) is less than -1 for z sufficiently large. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_15045 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Can a late-time cosmological model based on baby universe absorption explain the z-variation of w? Ambjorn, Jan Watabiki, Yoshiyuki General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory We point out that a simple late-time cosmological model where our Universe can absorb "baby universes" explains the exponential expansion of our universe without the need of a cosmological constant and leads to a z-dependence of the parameter w(z) in the equation of state. In this model w(z) is less than -1 for z sufficiently large. |
| title | Can a late-time cosmological model based on baby universe absorption explain the z-variation of w? |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2605.15045 |