English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present an alternative one-electron equation for resolving many-electronproblem to one-electron approximation and including the exchange andcorrelation effects in an analytical way, thereby fulfilling the requirementsfor ab initio calculation. To derive one-electron equation, we accept a newnotion of equivalent function suggestive of the pseudo wavefunction. As aresult, we reduce many-electron equation to one-electron including the exchangeeffect in an analytical method. Moreover we accept the notion of phase norm fortwo electrons to resolve the electronic correlation problem. The phase norm isused to specify the electron-approachable limit between particles. We take intoconsideration the electronic correlation with the help of a correlation-holefunction in terms of the phase norm, by which multiplying the integrand of theoperator term representing the interaction between electrons. Using the phasenorm leads to analytical consideration of the electronic correlation withoutemploying in a factitious way the additional term pertaining to correlation, soit embodies the physical essence of electronic correlation. The derivedequation becomes an one-electron equation which does not include an additionalterm pertaining to the exchange and correlation, but takes into considerationthe exchange and correlation effects in a rigorous ab initio way.

Self-consistent one-electron equation including exchange and correlation  in terms of equivalent function and phase norm: calculation for ground and  excited states in a unified way