Correction to: Communications Physics https://doi.org/10.1038/s42005-022-00829-y, published online 14 March 2022.

The notation of the capital cursive \({{{{{\boldsymbol{ {{{\mathcal{E}}}}}}}} }}\), was erroneously written in normal font, rather than in bold font, in all instances where it appears in the PDF version of the article.

This has now been corrected. The HTML version remains unchanged.