We study multi-field tunneling using exact solutions for additive potentials. We introduce a binomial potential with non-integer powers that could be considered a generalization of the $4D$ Fubini instanton potential. Using scaling arguments, we show that for multi-field potentials taller and wider barriers may still lead to a smaller bounce action.
A. Aravind, B. DiNunno, D. Lorshbough, et. al.
Thu, 11 Dec 14
Comments: 16 pages, 2 figures, 1 table