Finally, it is also worth noting that the newly emerging quantum algorithms enabling SAPT calculations on quantum computers can benefit from the presented formulation of exchange expressions since second-quantized operators are easily mapped into qubit space. Appendix A: Exchange-dispersion energy in S 4 approximation Using only T (100) (11) part of the excitation operator T (100) in equation ( ) and proceeding further in the same way as in sections III A and IV B, one can obtain an expression describing the exchange-dispersion energy correction in the S 4 approximation as