Potential NRQED: The positronium case

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Título:	Potential NRQED: The positronium case
Autor/a:	Pineda, Antonio; Soto Riera, Joan
Otros autores:	Universitat de Barcelona
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.
Materia(s):	-Teoria de camps (Física) -Partícules (Física nuclear) -Field theory (Physics) -Particles (Nuclear physics)
Derechos:	(c) The American Physical Society, 1998
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	The American Physical Society
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Brambilla, Nora; Eiras, Dolors; Pineda, Antonio; Soto Riera, Joan; Vairo, Antonio

Pineda, Antonio; Soto Riera, Joan

Pineda, Antonio; Soto Riera, Joan

Pineda, Antonio; Soto Riera, Joan

Bambrilla, Nora; Eiras, Dolors; Pineda, Antonio; Soto Riera, Joan; Vairo, Antonio

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