On the summation of the Brillouin-Wigner type perturbation series
K V Sane R P Saxena P K Srivastava
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/pram/013/01/0009-0014
It is shown that if the ‘mean excitation energy’ assumption is introduced in the Brillouin-Wigner perturbation series, then the resulting series can be exactly summed. The implications of the result for calculating energy shift and for constructing trial functions are examined with special reference to the ground state of the helium atom.
K V Sane1 R P Saxena1 2 P K Srivastava1 2
Volume 96, 2022
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2021-2022 Indian Academy of Sciences, Bengaluru.