ar X iv : h ep - p h / 01 06 03 6 v 1 4 J un 2 00 1 GUTPA / 01 / 04 / 02 Lorentz Invariance and Origin of Symmetries
نویسندگان
چکیده
In this letter we reconsider the role of Lorentz invariance in the dynami-cal generation of the observed internal symmetries. We argue that, generally, Lorentz invariance can only be imposed in the sense that all Lorentz non-invariant effects caused by the spontaneous breakdown of Lorentz symmetry are physically unobservable. Remarkably, the application of this principle to the most general relativistically invariant Lagrangian, with arbitrary couplings for all the fields involved, leads by itself to the appearance of a symmetry and, what is more, to the massless vector fields gauging this symmetry in both Abelian and non-Abelian cases. In contrast, purely global symmetries are only generated as accidental consequences of the gauge symmetry.
منابع مشابه
ar X iv : h ep - p h / 01 06 04 1 v 1 4 J un 2 00 1 PSN T 02 EXPERIMENTAL STATUS REPORT ON VECTOR MESON
The experimental status of light vector meson spectroscopy is discussed. The last results of e + e − experiments obtained at the VEPP-2M collider in Novosibirsk are described and the comparison with the old data in the mass region from 1 GeV to 2.5 GeV is performed.
متن کاملar X iv : h ep - p h / 02 03 14 6 v 1 1 5 M ar 2 00 2 GUTPA / 02 / 03 / 01 Could there be a Fourth Generation ? ∗
We investigate the possibility of incorporating a chiral fourth generation into a GUT model. We find that in order to do so, precision fits to electroweak observables demand the introduction of light (< MZ) su-persymmetric particles. This also enables us to provide decay channels to the fourth-generation quarks. Perturbative consistency sets an upper bound on the coloured supersymmetric spectru...
متن کاملar X iv : h ep - p h / 02 06 03 2 v 1 4 J un 2 00 2 Measurement of Λ 0 and Λ̄ 0 polarization in ν μ CC interactions in NOMAD
متن کامل
ar X iv : h ep - p h / 03 06 01 5 v 1 2 J un 2 00 3 The g factor of proton
We consider higher order corrections to the g factor of a bound proton in hydrogen atom and their consequences for a magnetic moment of free and bound proton and deuteron as well as some other objects.
متن کاملar X iv : h ep - t h / 05 01 01 7 v 1 4 J an 2 00 5 Lorentz invariance of scalar field action on κ - Minkowski space - time
We construct field theory on noncommutative κ-Minkowski spacetime. Having the Lorentz action on the noncommutative space-time coordinates we show that the field lagrangian is invariant. We show that noncommutativity requires replacing the Leibnitz rule with the coproduct one.
متن کامل