H2+ ion in strong magnetic field: a variational study

Abstract

Using a single trial function we perform an accurate calculation of the ground state $1{\sigma }_g$ of the hydrogenic molecular ion $H_2^{+}$ in a constant uniform magnetic field ranging $0-10^{13}$ G. We show that this trial function also makes it possible to study the negative parity ground state $1{\sigma }_u$. We obtain that over the whole range of magnetic fields studied, the calculated binding energies are in most cases larger than binding energies obtained previously by other authors using different methods.

RevTeX, 15 pages including 7 postscript figures (uuencoded) Title changed, several clarifying sentences added, Typos corrected. To be published in Phys. Rev. A

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