What Does FCA Stand For?

FCA stands for Frozen Core Appproximation

FCA, or Frozen Core Approximation, is a computational method used in quantum chemistry and materials science to simplify complex many-body systems. By "freezing" certain core electrons and focusing on the behavior of valence electrons, FCA significantly reduces the computational cost while maintaining accurate descriptions of electronic interactions. This technique is particularly useful in scalable simulations of larger systems, enabling researchers to investigate chemical properties and reactions with enhanced efficiency.

Added on 14th April 2008 | Last edited on 17th June 2025 | Edit Acronym

Other Meanings for FCA