Papers › Gravitational corrections to two-loop beta function in quantum electrodynamics
Gravitational corrections to two-loop beta function in quantum electrodynamics
L. Ibiapina Bevilaqua, M. Dias, A. C. Lehum, C. R. Senise Jr., A. J. da Silva, Huan Souza
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In this work, we use the framework of effective field theory to couple Einstein's gravity to quantum electrodynamics (QED) and determine the gravitational corrections to the two-loop beta function of the electric charge in arbitrary electrodynamics (Lorentz-like) and arbitrary (de Donder like) gravitational gauges. Our results indicate that gravitational corrections do not alter the running behavior of the electric charge; on the contrary, we observe that it gives a positive contribution to the beta function, making the electric charge grow even faster.
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