AUTHOR=Christodoulou Marios , Rovelli Carlo TITLE=Corrigendum: On the Possibility of Experimental Detection of the Discreteness of Time JOURNAL=Frontiers in Physics VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2021.666286 DOI=10.3389/fphy.2021.666286 ISSN=2296-424X