60
4 Perturbation Theory for the Electron Propagator
(b) Generate the same expansion by means of RSPT for the two-electron ground
state (see Appendix A.1).
(c) Perform an analogous analysis through third order for the CI coefficient
x 1 = = 1 | 0 in the exact ground state.
References
1. Fetter AL, Walecka JD (1971) Quantum theory of many-particle systems. Mc Graw-Hill, New
York
2. Martin PC, Schwinger J (1959) Phys Rev A 115:1342
3. Kadanoff LP, Baym G (1962) Quantum statistical mechanics. Benjamin, Reading
4. Gell-Mann M, Low F (1951) Phys Rev 84:350
5. Goldstone J (1957) Proc R Soc A 239:267
4 Perturbation Theory for the Electron Propagator
(b) Generate the same expansion by means of RSPT for the two-electron ground
state (see Appendix A.1).
(c) Perform an analogous analysis through third order for the CI coefficient
x 1 = = 1 | 0 in the exact ground state.
References
1. Fetter AL, Walecka JD (1971) Quantum theory of many-particle systems. Mc Graw-Hill, New
York
2. Martin PC, Schwinger J (1959) Phys Rev A 115:1342
3. Kadanoff LP, Baym G (1962) Quantum statistical mechanics. Benjamin, Reading
4. Gell-Mann M, Low F (1951) Phys Rev 84:350
5. Goldstone J (1957) Proc R Soc A 239:267