大反彈 

大反彈(big bounce)是說明宇宙起源的假说之一。大反弹最初是作为大爆炸循环模型的一个阶段提出的,認為宇宙的形成乃是不停重複大爆炸大擠壓的過程。也就是說宇宙是一直不停地收縮和膨脹。因此我們所說的宇宙的起源(也就是大爆炸)可能只是上一次宇宙大擠壓所造成的後果。[1][2][3][4]1980年代初,随着大尺度结构观测的进展,出现了解决视界问题宇宙暴胀说,人们开始认真考虑这问题。

暴胀将是永恒的,创造了无数具有不同典型性质的宇宙,因此可观测宇宙的性质是偶然的。[5]大反弹等概念是解决视界问题的另一种可预测、可证伪方案。[6]截至2022年,研究仍在进行。[7][8][9][10]

  1. ^ Abelev, B.; Adam, J.; Adamová, D.; Aggarwal, M. M.; Aglieri Rinella, G.; Agnello, M.; Agostinelli, A.; Agrawal, N.; Ahammed, Z.; Ahmad, N.; Ahmed, I.; Ahn, S. U.; Ahn, S. A.; Aimo, I.; Aiola, S. Beauty production in pp collisions at s=2.76 TeV measured via semi-electronic decays. Physics Letters B. 2014-11-10, 738: 97–108 [2023-12-21]. ISSN 0370-2693. S2CID 119489459. doi:10.1016/j.physletb.2014.09.026可免费查阅. (原始内容存档于2023-11-24) (英语). 
  2. ^ Novello, M.; Bergliaffa, S. E. Perez. Bouncing cosmologies. Physics Reports. 2008-07-01, 463 (4): 127–213. Bibcode:2008PhR...463..127N. ISSN 0370-1573. S2CID 119274449. arXiv:0802.1634可免费查阅. doi:10.1016/j.physrep.2008.04.006 (英语). 
  3. ^ Finelli, Fabio; Brandenberger, Robert. Generation of a scale-invariant spectrum of adiabatic fluctuations in cosmological models with a contracting phase. Physical Review D. 2002-05-15, 65 (10): 103522. Bibcode:2002PhRvD..65j3522F. S2CID 7262222. arXiv:hep-th/0112249可免费查阅. doi:10.1103/PhysRevD.65.103522. 
  4. ^ Ashtekar, Abhay; Pawlowski, Tomasz; Singh, Parampreet. Quantum nature of the big bang: Improved dynamics. Physical Review D. 2006-10-02, 74 (8): 084003. Bibcode:2006PhRvD..74h4003A. S2CID 34651070. arXiv:gr-qc/0607039可免费查阅. doi:10.1103/PhysRevD.74.084003. 
  5. ^ McKee, Maggie. Ingenious: Paul J. Steinhardt – The Princeton physicist on what's wrong with inflation theory and his view of the Big Bang. Nautilus (17) (NautilusThink Inc.). 2014-09-25 [2017-03-31]. (原始内容存档于2017-01-23). 
  6. ^ Steinhardt, Paul J.; Turok, Neil. The cyclic model simplified. New Astronomy Reviews. 2005, 49 (2–6): 43–57. Bibcode:2005NewAR..49...43S. ISSN 1387-6473. S2CID 16034194. arXiv:astro-ph/0404480可免费查阅. doi:10.1016/j.newar.2005.01.003. 
  7. ^ Ijjas, Anna; Steinhardt, Paul J. Entropy, black holes, and the new cyclic universe. Physics Letters B. 2022-01-10, 824: 136823 [2023-12-21]. doi:10.1016/j.physletb.2021.136823可免费查阅. (原始内容存档于2023-12-21) –通过ScienceDirect. 
  8. ^ Wood, Charlie. Big Bounce Simulations Challenge the Big Bang. Quanta Magazine. 2020-08-04 [2023-12-21]. (原始内容存档于2023-08-24). 
  9. ^ Lehners, Jean-Luc; Steinhardt, Paul J. Planck 2013 results support the cyclic universe. Physical Review D. 2013, 87 (12): 123533. Bibcode:2013PhRvD..87l3533L. ISSN 1550-7998. S2CID 76656473. arXiv:1304.3122可免费查阅. doi:10.1103/PhysRevD.87.123533. 
  10. ^ Brandenberger, Robert; Peter, Patrick. Bouncing Cosmologies: Progress and Problems. Foundations of Physics. 2017, 47 (6): 797–850. Bibcode:2017FoPh...47..797B. ISSN 0015-9018. S2CID 118847768. arXiv:1603.05834可免费查阅. doi:10.1007/s10701-016-0057-0. 



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