Consider the Higgs-type potential (V=alphaleft(x^{2}-a^{2} ight)^{2}), and a transition between the two vacua (minima of the potential)

Consider the Higgs-type potential \(V=\alpha\left(x^{2}-a^{2}\right)^{2}\), and a transition between the two vacua (minima of the potential) \(x_{1}=-a\) and \(x_{2}=+a\). Calculate the transition probability in the classical one-instanton approximation.