Entropic properties of $D$-dimensional Rydberg systems

Abstract

The fundamental information-theoretic measures (the Rényi $R_p[\rho ]$ and Tsallis $T_p[\rho ]$ entropies, $p>0$) of the highly-excited (Rydberg) quantum states of the $D$-dimensional ($D>1$) hydrogenic systems, which include the Shannon entropy ($p\to 1$) and the disequilibrium ($p=2$), are analytically determined by use of the strong asymptotics of the Laguerre orthogonal polynomials which control the wavefunctions of these states. We first realize that these quantities are derived from the entropic moments of the quantum-mechanical probability $\rho (\vec{r})$ densities associated to the Rydberg hydrogenic wavefunctions ${\Psi }_{n,l,\{\mu \}}(\vec{r})$, which are closely connected to the ${\mathfrak{L}}_p$-norms of the associated Laguerre polynomials. Then, we determine the ($n\to \infty$)-asymptotics of these norms in terms of the basic parameters of our system (the dimensionality $D$, the nuclear charge and the hyperquantum numbers $(n,l,\{\mu \}$) of the state) by use of recent techniques of approximation theory. Finally, these three entropic quantities are analytically and numerically discussed in terms of the basic parameters of the system for various particular states.

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Cited by in corpus (9)

• Information-entropic measures in free and confined hydrogen atom
• Entropic uncertainty measures for large dimensional hydrogenic systems
• Exact Shannon entropies for the multidimensional harmonic states
• Analytical Shannon information entropies for all discrete multidimensional hydrogenic states
• Rényi entropies for multidimensional hydrogenic systems in position and momentum spaces
• Entropic functionals of Laguerre and Gegenbauer polynomials with large parameters
• Exact Rényi entropies of $D$-dimensional harmonic systems
• Rényi and Tsallis entropies of the Dirichlet and Neumann one-dimensional quantum wells
• Quantum information measures of the Dirichlet and Neumann hyperspherical dots