Chiral Leptons and Hypermagnetic Fields in the Hot Electroweak Era: Effects of a Strong-Field Hypermagnetic "Mass" on Chiral-Lepton Green's Functions, Self-Energy and Dispersion Relations

Chiral Leptons and Hypermagnetic Fields in the Hot Electroweak Era: Effects of a Strong-Field Hypermagnetic "Mass" on Chiral-Lepton Green's Functions, Self-Energy and Dispersion Relations

von JOHN CANNELLOS
Taschenbuch - 9783843379823
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Beschreibung

In the standard model, neutrinos, unlike electrons, are massless, electrically neutral and possess no magnetic moment. They can interact with the electromagnetic field only by radiative corrections. But before the electroweak phase transition, all leptons were massless, hypercharged particles that couple to the hypermagnetic field at tree level. In this volume, we consider the direct coupling of chiral leptons to an external hypermagnetic field in the symmetric, or unbroken electroweak era. Using the strong field approximation, and Ritus' method for transformations to momentum space in a constant, uniform background field, we find that a magnetic "mass" term appears in the massless lepton Green's function, which makes the self-energy finite, and avoids infrared divergences. Finite-temperature calculation of self-energies to first order in momenta demonstrates that the temperature-dependent, mass-like term that exists in the absence of the external field disappears, and that the chiral-lepton flux is collimated in the direction of the hypermagnetic field. Can an extinct, strong hypermagnetic field be revealed in the anisotropic flux of the present-day Cosmic Neutrino Background?

Details

Verlag LAP Lambert Acad. Publ.
Ersterscheinung Januar 2011
Maße 220 mm x 150 mm x 8 mm
Gewicht 207 Gramm
Format Taschenbuch
ISBN-13 9783843379823
Auflage Nicht bekannt
Seiten 128

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