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1998

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12438

Potential NRQED: The positronium case

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http://dx.doi.org/10.1103/PhysRevD.59.016005

Abstract

We discuss in detail potential NRQED (pNRQED), a previously proposed effective field theory for ultrasoft photons. The pNRQED lagrangian for the equal mass case is presented and it is shown that it correctly reproduces the positronium spectrum at order $m\alpha^5$. The pNRQED lagrangian for the unequal mass case is also presented at the same order. Dimensional regularization is used throughout.

Subject

Teoria de camps (Física), Partícules (Física nuclear)

Subject (English)

Field theory (Physics), Particles (Nuclear physics)

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

PINEDA, Antonio (Pineda Ruiz) and SOTO RIERA, Joan. Potential NRQED: The positronium case. Physical Review D. 1998. Vol. 59, num. 1, pags. 016005-1-016005-10. ISSN 0556-2821. [consulted: 12 of June of 2026]. Available at: https://hdl.handle.net/2445/12438

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