Abstract
Abstract We calculate Shannon and Fisher entropies in the position and momentum space, and some complexity measures for a variationally described hydrogen atom confined in soft and hard spherical boxes of varying dimension r c and selected values of strength U 0 . We include calculations for a free particle trapped in impenetrable boxes. It is found that the Shannon entropy S r becomes negative for small cavity radii and large values of U 0 , due to the highly localized nature of the particle. For soft confinement and small cavity dimensions, the entropies change very rapidly over short radial intervals.
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