The fate of small classically stable Q-balls

Autor:	Levkov, Dmitry, Nugaev, Emin, Popescu, Andrei
Rok vydání:	2017
Předmět:	High Energy Physics - Phenomenology Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Theory
Zdroj:	JHEP 1712 (2017) 131
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP12(2017)131
Popis:	The smallest classically stable Q-balls are, in fact, generically metastable: in quantum theory they decay into free particles via collective tunneling. We derive general semiclassical method to calculate the rate of this process in the entire kinematical region of Q-ball metastability. Our method uses Euclidean field-theoretical solutions resembling the Coleman's bounce and fluctuations around them. As an application of the method, we numerically compute the decay rate to the leading semiclassical order in a particular one-field model. We shortly discuss cosmological implications of metastable Q-balls. Comment: 31 pages, 11 figures; journal version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1711.05279 Zobrazit plný text záznamu View this record from Arxiv