Results in Mathematics

, 74:184 | Cite as

Variational Principles of General Connections with a Certain Deformation of Representations

  • Kensaku KitadaEmail author


We investigate variational principles of general connections on principal bundles. In order to develop further a gauge theory by means of general connections, we introduce a certain deformation of representations of the structure group. This enables us to define exterior covariant derivatives on a space of sort of shifted fields. We construct action densities by using general connections, and deduce a sort of Lagrange’s equation and that of inhomogeneous field equation simultaneously. Due to the definition of the curvature of general connections, a new term will arise in the latter equation, which we demonstrate later to be an obstruction for current conservation law to hold. Finally, we explain that a theory of general connections is a natural means to describe so-called Higgs mechanism.


General connection variational principle Lagrange’s equation inhomogeneous field equation current conservation law Higgs mechanism 

Mathematics Subject Classification

58E30 58E15 53C05 53C80 



I would like to express my gratitude to professor Akira Yoshioka for his valuable advices and suggestions.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of MathematicsTokyo University of ScienceShinjuku-kuJapan

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