Photon-neutrino interaction in theta-exact covariant noncommutative field theory

Details Photon-neutrino interaction in theta-exact covariant noncommutative field theory Photon-neutrino interaction in theta-exact covariant noncommutative field theory

2011-03-17

arxiv.org/abs/1103.3383v3

Phys.Rev.D84:045004,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

using revtex4, 10 pages, 2 eps figure, text slightly expanded,references added, some typos fixed

Scientific paper

10.1103/PhysRevD.84.045004

Photon-neutrino interactions arise quite naturally in noncommutative field theories. Such couplings are absent in ordinary field theory and imply experimental lower bounds on the energy scale Lambda_NC ~ 1/|theta|^2 of noncommutativity. Using non-perturbative methods and a Seiberg-Witten map based covariant approach to noncommutative gauge theory, we obtain theta-exact expressions for the interactions, thereby eliminating previous restrictions to low-energy phenomena. We discuss implications for plasmon decay, neutrino charge radii, big bang nucleosynthesis and ultrahigh energy cosmic rays. Our results behave reasonably throughout all interaction energy scales, thus facilitating further phenomenological applications.

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