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- W3141556992 abstract "This is my Ph.D. thesis defended at 31 May 2021, and it is devoted to the study of the geometry of curved Yang-Mills-Higgs gauge theory (CYMH GT), a theory introduced by Alexei Kotov and Thomas Strobl. This theory reformulates classical gauge theory, in particular, the Lie algebra (and its action) is generalized to a Lie algebroid $E$, equipped with a connection $nabla$, and the field strength has an extra term $zeta$. In the classical situation $E$ is an action Lie algebroid, $nabla$ is then the canonical flat connection with respect to such an $E$, and $zetaequiv 0$. The shortened main results of this Ph.D.thesis are the following; see the abstract in the thesis itself for more information: 1. Reformulating curved Yang-Mills-Higgs gauge theory, also including a thorough introduction and a coordinate-free formulation. Especially the infinitesimal gauge transformation will be generalized to a derivation on vector bundle $V$-valued functionals, induced by a Lie algebroid connection. 2. We will discuss what type of connection for the definition of the infinitesimal gauge transformation should be used, and this is argued by studying the commutator of two infinitesimal gauge transformations, viewed as derivations on $V$-valued functionals. We take the connection on $W$ then in such a way that the commutator is again an infinitesimal gauge transformation. 3. Defining an equivalence of CYMH GTs given by a field redefinition. In order to preserve the physics, this equivalence is constructed in such a way that the Lagrangian of the studied theory is invariant under this field redefinition. It is then natural to study whether there are equivalence classes admitting representatives with flat $nabla$ and/or zero $zeta$, and we will do so especially for Lie algebra bundles, tangent bundles and their direct products as Lie algebroids." @default.
- W3141556992 created "2021-04-13" @default.
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- W3141556992 date "2021-04-05" @default.
- W3141556992 modified "2023-09-27" @default.
- W3141556992 title "Geometry of curved Yang-Mills-Higgs gauge theories" @default.
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- W3141556992 doi "https://doi.org/10.13097/archive-ouverte/unige:152555" @default.
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