Catalytic Creation of Baby Bubble Universe with Small Positive Cosmological Constant

Autor:	Koga, Issei, Ookouchi, Yutaka
Rok vydání:	2019
Předmět:	High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP10(2019)281
Popis:	We investigate the decay of metastable de Sitter, Minkowski and anti-de Sitter vacua catalyzed by a black hole and a cloud of strings. We apply the method to the creation of the four dimensional bubble universe in the five dimensional anti-de Sitter spacetime recently proposed by Banerjee, Danielsson, Dibitetto, Giri and Schillo. We study the bounce action for the creation and find that the bubble with very small cosmological constant, of order $\Lambda^{(4)}/M^2_4 \sim 10^{-120}$, is favored by the catalysis by assuming appropriate mass scales of the black hole and the cloud of strings to reproduce the present energy densities of matter and radiation in the bubble universe. Comment: 25 pages, 8 figures, v3: references added, minor typos corrected. to appear in JHEP, v4: ref added, definition of cosmological constant in section 4 is modified for consistency throughout the paper
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1909.03014 Zobrazit plný text záznamu View this record from Arxiv