Variations on vacuum decay: The scaling Ising and tricritical Ising field theories

Autor:	M. Lencsés, G. Mussardo, G. Takács
Rok vydání:	2022
Předmět:	High Energy Physics - Theory High Energy Physics - Theory (hep-th) Statistical Mechanics (cond-mat.stat-mech) FOS: Physical sciences Condensed Matter - Statistical Mechanics Settore FIS/02 - Fisica Teorica Modelli e Metodi Matematici
Zdroj:	Physical Review
ISSN:	2470-0029 2470-0010
DOI:	10.1103/physrevd.106.105003
Popis:	We study the decay of the false vacuum in the scaling Ising and tricritical Ising field theories using the Truncated Conformal Space Approach and compare the numerical results to theoretical predictions in the thin wall limit. In the Ising case, the results are consistent with previous studies on the quantum spin chain and the $\varphi^4$ quantum field theory; in particular we confirm that while the theoretical predictions get the dependence of the bubble nucleation rate on the latent heat right, they are off by a model dependent overall coefficient. The tricritical Ising model allows us on the other hand to examine more exotic vacuum degeneracy structures, such as three vacua or two asymmetric vacua, which leads us to study several novel scenarios of false vacuum decay by lifting the vacuum degeneracy using different perturbations. Comment: 17 pages, 16 figures, 3 tables
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74be337c9ecd5a61f43bc81669616c4b https://doi.org/10.1103/physrevd.106.105003 Zobrazit plný text záznamu