# Quantum focusing conjecture (QFC) ## Relation to other energy conditions - classically: still [[0480 Null energy condition|NEC]] - quantum mechanically: [[0480 Null energy condition|NEC]] is violated, and QFC seems to be the strongest reasonable quasi-local bulk assumption - weak gravity limit: [[0405 Quantum null energy condition|QNEC]] - restricted QFC: [[2022#Shahbazi-Moghaddam]] ## Refs - [[2017#Akers, Chandrasekaran, Leichenauer, Levine, Shahbazi-Moghaddam]] - original - [[2015#Bousso, Fisher, Leichenauer, Wall]] - consequences - ![[AkersKoellerLeichenauerLevine2016_relation9.png|400]] - in the presence of islands - [[2023#Matsuo]]: in Vaidya - [[2024#Ishibashi, Matsuo, Tanaka]]: in RST model - in EFT - [[2024#Kanai, Maeda, Noumi, Yoshida]]: calculates a cutoff scale in quadratic gravity by requiring QFC to hold - dealing with discrete points - [[2024#Bousso, Tabor]]