Finite temperature corrections and embedded strings in noncommutative geometry and the standard model with neutrino mixing

Details Finite temperature corrections and embedded strings in noncommutative geometry and the standard model with neutrino mixing Finite temperature corrections and embedded strings in noncommutative geometry and the standard model with neutrino mixing

2007-05-04

arxiv.org/abs/0705.0613v2

J.Math.Phys.48:083509,2007

Physics

High Energy Physics

High Energy Physics - Theory

42 pages

Scientific paper

10.1063/1.2771551

The recent extension of the standard model to include massive neutrinos in the framework of noncommutative geometry and the spectral action principle involves new scalar fields and their interactions with the usual complex scalar doublet. After ensuring that they bring no unphysical consequences, we address the question of how these fields affect the physics predicted in Weinberg-Salam theory, particularly in the context of the Electroweak phase transition. Applying the Dolan-Jackiw procedure, we calculate the finite temperature corrections, and find that the phase transition is first order. The new scalar interactions significantly improve the stability of the Electroweak Z string, through the ``bag'' phenomenon described by Watkins and Vachaspati. (Recently cosmic strings have climbed back into interest due to new evidence). Sourced by static embedded strings, an internal space analogy of Cartan's torsion is drawn, and a possible Higgs-force-like `gravitational' effect of this non-propagating torsion on the fermion masses is described. We also check that the field generating the Majorana mass for the $\nu_R$ is non-zero in the physical vacuum.

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