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Expectation values of the e+ PsH system

Zhang, Jun-Yi and Mitroy, Jim (2007). Expectation values of the e+ PsH system. Physical Review A (Atomic, Molecular and Optical Physics),76(1):14501-1-14501-4.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 2 times in Scopus Article | Citations

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IRMA ID 79608405xPUB14
Title Expectation values of the e+ PsH system
Author Zhang, Jun-Yi
Mitroy, Jim
Journal Name Physical Review A (Atomic, Molecular and Optical Physics)
Publication Date 2007
Volume Number 76
Issue Number 1
ISSN 1094-1622   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-34547182282
Start Page 14501-1
End Page 14501-4
Total Pages 4
Place of Publication College Park, United States
Publisher American Physical Society
Field of Research 0202 - Atomic, Molecular, Nuclear, Particle and Plasma Physics
0204 - Condensed Matter Physics
0205 - Optical Physics
HERDC Category C1 - Journal Article (DEST)
Abstract Close to converged energies and expectation values for e(+)PsH are computed using a ground-state wave function consisting of 1500 explicitly correlated Gaussians. The best estimate of the e(+)PsH(infinity) energy was -0.810 254 hartrees, which has a binding energy of 0.021 057 hartrees against dissociation into e(+)+PsH. The 2 gamma annihilation rate was 2.7508x10(9) s(-1). Binding energies and annihilation rates are also given for the different finite-mass variants of e(+)PsH. Comparisons between expectation values for e(+)PsH and PsH provide compelling evidence that the e(+)PsH ground state can be regarded as consisting of a weakly bound positron orbiting the PsH ground state.
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Additional Notes Copyright by the American Physical Society

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