Expectation Values in Relativistic Coulomb Problems

Details Expectation Values in Relativistic Coulomb Problems Expectation Values in Relativistic Coulomb Problems

2009-06-18

arxiv.org/abs/0906.3338v9

Physics

Quantum Physics

16 pages, one table, two appendices, no figures; to appear in J. Phys. B: At. Mol. Opt. Phys

Scientific paper

We evaluate the matrix elements , where O ={1, \beta, i\alpha n \beta} are the standard Dirac matrix operators and the angular brackets denote the quantum-mechanical average for the relativistic Coulomb problem, in terms of the generalized hypergeometric functions_{3}F_{2} for all suitable powers. Their connections with the Chebyshev and Hahn polynomials of a discrete variable are emphasized. As a result, we derive two sets of Pasternack-type matrix identities for these integrals, when p->-p-1 and p->-p-3, respectively. Some applications to the theory of hydrogenlike relativistic systems are reviewed.

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