In the original publication of this article, the equation on page 3, line 163 had an incorrect character.
The proper equation is as follows:
$$\vert {A_{L1}(\bar{z} = 0)} \vert ^2$$
The publisher regrets this error.
Published online by Cambridge University Press: 15 February 2019
In the original publication of this article, the equation on page 3, line 163 had an incorrect character.
The proper equation is as follows:
The publisher regrets this error.