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September 5, 2025Deleted JournalOpen Access

Generalized Gradient Approximation Made Simple: Theoretical Review

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Theoretical review elucidates PBE's efficiency in exchange-correlation, highlighting its foundational constraints and enhancements.

The generalized gradient approximation enhances computational efficiency in modeling exchange-correlation, simplifying many-electron physics.
PBE meets exact conditions like uniform scaling and linear response, ensuring accuracy in density-functional applications.
Mathematics behind PBE involves deriving reduced gradients and enhancement factors essential for its formulation.
This exposition showcases extensions like PBEsol, enriching the discussion around density-functional theory's applications.

Alexander Fernando Haro Sarango (2025) studied this question.

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