1 Erratum to: Eur. Phys. J. B (2021) 94:65 https://doi.org/10.1140/epjb/s10051-021-00076-0

In the original article, the breaking of Eq. (83) in two lines had introduced a mistake. Please see below the correct equation:

$$\begin{aligned} {\overline{Z^{n}}}= & {} \sum \limits _{\text {field configurations}} e^{-{\sum }_{a} \left[ {\mathcal {A}}_{a}^{*} + g_1 \smallint d^{d} x \varepsilon _{a} (x)\right] } \nonumber \\&\times e^{g_2 {\sum }_{a\ne b} \smallint d^{d} x \, \varepsilon _{a} (x) \, \varepsilon _{b} (x) + \cdots }, \end{aligned}$$
(83)

The original article has been corrected.