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Showing 1 to 4 of 4 for “"Spinor fields"”.
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On the structure of geometries with spinor-type connexion
… of the classical fieldtheoretic description of spinor fields in curved space-time. A geometric model for spinor fields in curved space-time is described which is based upon properties of so-called tangent Clifford algebras. The tangent Clifford algebra to a space-time manifold at a certain point …
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Radiative Corrections to and Connections Among Theories With Lorentz Violation and Time-Varying Couplings
… </p> <p>Finally, a theory of scalar and spinor fields, interacting through Yukawa and &phi<super>4</super> interactions, with Lorentz-violating operators included in the Lagrangian is considered. The leading quantum corrections in this theory are computed, showing the renormalizability of …
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Gravity, spinors and gauge-natural bundles
… formulation of the coupling between gravity and spinor fields. In Chapter 1 we recall the necessary background material from differential geometry and introduce the fundamental notion of a gauge-natural bundle. Chapter 2 is devoted to expounding the general theory of Lie derivatives, its …
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The evolution equations for Dirac-harmonic Maps
… couple the equation for harmonic maps with spinor fields. At present, many analytical properties of Dirac-harmonic maps are known, but a general existence result is still missing. In this thesis the existence question is studied using the evolution equations for a regularized version of …