Makale detayı · 2015
Spontaneous Lorentz violation the case of infrared QED
The European Physical Journal C
- Yıl
- 2015
- ISSN
1434-6044- Tür
- article
Veri kaynağı ayrımı
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Özet
İngilizce (OpenAlex)
It is by now clear that the infrared sector of quantum electrodynamics (QED) has an intriguingly complex structure. Based on earlier pioneering work on this subject, two of us recently proposed a simple modification of QED by constructing a generalization of the $$U(1)$$ charge group of QED to the “Sky” group incorporating the well-known spontaneous Lorentz violation due to infrared photons, but still compatible in particular with locality (Balachandran and Vaidya, Eur Phys J Plus 128:118, 2013). It was shown that the “Sky” group is generated by the algebra of angle-dependent charges and a study of its superselection sectors has revealed a manifest description of spontaneous breaking of the Lorentz symmetry. We further elaborate this approach here and investigate in some detail the properties of charged particles dressed by the infrared photons. We find that Lorentz violation due to soft photons may be manifestly codified in an angle-dependent fermion mass, modifying therefore the fermion dispersion relations. The fact that the masses of the charged particles are not Lorentz invariant affects their spin content, and time dilation formulas for decays should also get corrections.
Konular
- Noncommutative and Quantum Gravity Theories
- Black Holes and Theoretical Physics
- Quantum Mechanics and Applications
Birincil konu Noncommutative and Quantum Gravity Theories