Enhancement of Compton scattering by an effective coupling constant

Bernardo Barbiellini, Piero Nicolini

Research output: Contribution to journalArticlepeer-review


A robust thermodynamic argument shows that a small reduction of the effective coupling constant α of QED greatly enhances the low-energy Compton-scattering cross section and that the Thomson scattering length is connected to a fundamental scale λ. A discussion provides a possible quantum interpretation of this enormous sensitivity to changes in the effective coupling constant α.

Original languageEnglish (US)
Article number022509
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
StatePublished - Aug 22 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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