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Open Quantum Systems Decoherence

Order alpha(7)ln(1/alpha) contribution to positronium hyperfine splitting.

PubMed
Authors: Kniehl BA, Penin AA

Year

2000

Paper ID

13293

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

56

Citations

79

Abstract

The logarithmically enhanced alpha(7)ln(1/alpha) contribution to the hyperfine splitting of the positronium ground-state energy levels is calculated in the framework of dimensionally regularized nonrelativistic quantum electrodynamics. The correction is negative and amounts to about 1/3 of the leading logarithmic alpha(7)ln (2)(1/alpha) one. The discrepancy between the experimental measurements and the theoretical prediction is reduced.

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  • The logarithmically enhanced alpha(7)ln(1/alpha) contribution to the hyperfine splitting of the positronium ground-state energy levels is calculated in the framework of...

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References & Citation Signals

[1] DOI https://doi.org/10.1103/PhysRevLett.85.5094 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/11102194/

Local Citation Graph (Related-Paper Links)

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External citation index: OpenAlex citation signal • updated 2026-06-13 21:23:09

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