Source: cirosantilli/theories-of-quantum-matter-by-austen-lamacraft/the-elastic-chain/evaluating-56
= Evaluating (56)
https://austen.uk/courses/tqm/elastic-chain/#evaluating-eqrefcoll_uvar
= Evaluating (56)
https://austen.uk/courses/tqm/elastic-chain/#evaluating-eqrefcoll_uvar