2011/02/26 by Jun Zhang, Zhang, Jun
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #History and Developments in Astronomy #Planetary Science and Exploration #Space Science and Extraterrestrial Life #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.48550/arxiv.1102.5395
3 pages, 1 fig, invited essay for the Journal of Cosmology
arxiv created 2011/02/26 · openalex publication_date 2011/02/26 · arxiv updated 2011/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Cyclic cosmology, in which the universe will experience alternating periods of gravitational collapse and expansion, provides an interesting understanding of the early universe and is described as "The Phoenix Universe". In usual expectation, the cyclic universe should be homogeneous, however, with studying the cosmological perturbations, we find that the amplification of curvature perturbations on the large scale may rip the homogeneous universe into a fissiparous multiverse after one or several cycles. Thus, we suggest that the cyclic universe not only rebirths in the "fire" and will never ended, like the Phoenix, but also proliferates eternally.