2022-04-25

UTAPwiki/セミナー/初期宇宙・相対論速報

Title: Brown–Teitelboim mechanism †

Speaker: Fumio Uchida †

The cosmological constant problem is a serious naturalness problem in cosmology. One of the most popular approaches to the problem is the Brown–Teitelboim mechanism. In the mechanism, four-form gauge fluxes play the role of the cosmological constant, and the controversial anthropic argument is employed. In the talk, I will explain the idea of Bousso–Polchinski [1], which overcomes a drawback of Brown–Teitelboim’s original idea [2], and its recent extension [3] that tries to address the Higgs naturalness problem as well.

[1] R. Bousso, and J. Polchinski, JHEP 06 (2000) 006 [arXiv: hep-th/0004134]
[2] J. Brown, and C. Teitelboim PLB 195, 177 (1987), J. Brown, and C. Teitelboim Nucl. Phys. B 297, 787 (1988) as the original ideas; R. Bousso, Gen. Relativ. Gravit. 40, 607 (2008) [arXiv: 0708.4231] for a review
[3] M. Moretti, and F. Pedro (2022) [arXiv:2202.07004]