Prof. Joaquim Gomis, Physics Department, Universitat de Barcelona

"Symmetries of post Galilean expansions"

Abstract: We will introduce a generalization of the Minkowski space with extra space-time coordinates. The extension has an interpretation in terms of post-Galilean (Newtonian) corrections to Galilei symmetries and has a space-time symmetry. As an application we construct particle and string actions that are invariant under these symmetry transformations.