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

A recursion technique of obtaining the asymptotical expansions for thebound-state energy eigenvalues of the radial Schr\"odinger equation with aposition-dependent mass is presented. As an example of the application wecalculate the energy eigenvalues for the Coulomb potential in the presence ofposition-dependent mass and we derive the inequalities regulating the shifts ofthe energy levels from their constant-mass positions.

$\hbar$-expansion for the Schr\"odinger equation with a position-dependent mass