Quantum electrodynamics on noncommutative spacetime
نویسندگان
چکیده
منابع مشابه
Quantum Electrodynamics on Noncommutative Spacetime
We propose a new method to quantize gauge theories formulated on a canonical noncommutative spacetime with fields and gauge transformations taken in the enveloping algebra. We show that the theory is renormalizable at one loop and compute the beta function and show that the spin dependent contribution to the anomalous magnetic moment of the fermion at one loop has the same value as in the commu...
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The star commutator of : φ(x)⋆φ(x) : with : φ(y)⋆φ(y) : fails to vanish at equal times and thus also fails to obey microcausality at spacelike separation even for the case in which θ0i = 0. The failure to obey microcausality for this sample observable implies that this form of noncommutative field theory fails to obey microcausality in general. This result also holds for general fields and obse...
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We compute the beta-functions of the standard model formulated on a noncommutative spacetime. If we assume that the scale for spacetime noncommutativity is of the order of 8.2× 1012 GeV we find that the three gauge couplings of the standard model merge at a scale of 2.3 × 1017 GeV. The proton lifetime is thus much longer than in conventional unification models.
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We study the possibility of detecting noncommutative QED through neutral Higgs boson pair production at γγ collider. This is based on the assumption that H interacts directly with photon as suggested by symmetry considerations. The sensitivity of the cross–section to the noncommutative scale ΛNC and Higgs mass is investigated. PACS number(s): 11.15.-q, 11.25.Mj, 13.40.-f e–mail: [email protected]...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2007
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-006-0192-4