What Does ASPG Stand For?

ASPG stands for Antisymmetrized Product Of Separated Geminals Approxn

ASPG, or Antisymmetrized Product of Separated Geminals Approximation, is a quantum chemistry approach used to describe electronic wave functions in many-body systems. This method employs a product of geminal wave functions, which are constructed from pairs of electrons, and incorporates antisymmetrization to ensure compliance with the Pauli exclusion principle. ASPG is particularly valuable for modeling correlation effects in systems where electron interactions play a critical role, thereby providing an efficient balance between computational feasibility and accuracy in electronic structure calculations.