Two typos should be corrected in equations (45) and (47) in our paper.
First, in the middle steps of the second equality in equation (45),5() several minus signs are missing. The second equality of equation (45) should be corrected by
$\begin{eqnarray}\begin{array}{rcl}{m}_{b}^{* } & \approx & \displaystyle \frac{1}{2}{\left(1-\displaystyle \frac{B+Q}{\pi \left|c\right|}\right)}^{2}\approx \displaystyle \frac{1}{2}\left(1-\displaystyle \frac{2B+2Q}{\pi \left|c\right|}\right)\\ & = & m\left(1-\displaystyle \frac{2B+2Q}{\pi \left|c\right|}\right)\approx m\left(1-\displaystyle \frac{1}{{\gamma }_{b}}-\displaystyle \frac{2}{{\gamma }_{u}}\right),\end{array}\end{eqnarray}$
where we also replace mb by m since for free fermions, mb = mu = m.Secondly, the middle steps of the second equality in equation (47)6() should be corrected by
$\begin{eqnarray}\begin{array}{rcl}{m}_{u}^{* } & \approx & \displaystyle \frac{1}{2}{\left(1-\displaystyle \frac{4B}{\pi \left|c\right|}\right)}^{2}\approx \displaystyle \frac{1}{2}\left(1-\displaystyle \frac{8B}{\pi \left|c\right|}\right)\\ & = & m\left(1-\displaystyle \frac{8B}{\pi \left|c\right|}\right)\approx m\left(1-\displaystyle \frac{4}{{\gamma }_{b}}\right).\end{array}\end{eqnarray}$
These typos did not appear in other calculation steps and therefore there is no influence on final results.Moreover, at the beginning of the penultimate line of equation (5), there is an unwanted multiplication symbol due to a misprint.