TL;DR
This paper derives the Noether currents and charges for internal galilean invariance in galileon theories, clarifying their physical interpretation and connecting them to familiar symmetries like Galileo- and Lorentz-boosts.
Contribution
It provides the first explicit derivation of Noether currents and charges for internal galilean symmetry in galileon theories, clarifying their physical meaning.
Findings
Derived explicit forms of Noether currents and charges.
Clarified the physical interpretation of these charges.
Connected internal galilean symmetry to known boost symmetries.
Abstract
We derive the Noether currents and charges associated with an internal galilean invariance---a symmetry recently postulated in the context of so-called galileon theories. Along the way we clarify the physical interpretation of the Noether charges associated with ordinary Galileo- and Lorentz-boosts.
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