Coupled cluster methods are advanced quantum chemistry techniques used to calculate the electronic structure of many-body systems by accounting for electron correlation effects. These methods improve upon simpler approaches like Hartree-Fock by including excited-state interactions, leading to more accurate predictions of molecular properties and energies. They are particularly useful for systems where electron correlation plays a significant role, making them essential in post-Hartree-Fock approaches.
congrats on reading the definition of Coupled cluster methods. now let's actually learn it.