Late time acceleration of our Universe caused by the absorption of baby universes

2024/01/12 by J. Ambjørn, Ambjorn, Jan, Y. Watabiki +1
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th)

paper · pdf · doi:10.48550/arxiv.2401.06931

openalex publication_date 2024/01/12 · openalex created_date 2024/01/18 · openalex updated_date 2026/07/28

Abstract

If our Universe is allowed to absorb baby universes, one obtains a modified Friedmann equation that can explain the late time acceleration of our Universe and there is no need for a cosmological constant. In addition the modified Friedmann equation favors the value of the Hubble constant obtained by local measurements.

Related

• Is the present acceleration of the Universe caused by merging with other universes?
• The Physical Principle that determines the Value of the Cosmological Constant
• Cosmic Acceleration from Nothing
• Missing Mass, Dark Energy and the Acceleration of the Universe. Is Acceleration Here to Stay?
• The age of the universe, the Hubble constant, the accelerated expansion and the Hubble effect