Inverse Volume Scaling of Finite-Size Error in Periodic Coupled Cluster Theory Xin Xing1and Lin Lin1,2 1Department of Mathematics, University of California, Berkeley, California 94720, USA 2Applied Mathematics and Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA (Received 18 April 2023; revised 17 January 2024; accepted 13 February 2024; published 28 March 2024) Coupled cluster theory is one of the most popular post-Hartree-Fock methods for ...