Five dimensional formulation of a DSR
  In this paper, we analyze a possible formalization of the deformed special relativity as a five-dimensional theory. This is not the first attempt to do so, but we feel that either these previous treatments are too arbitrary in the choice of the new enlarged space, or they lack a satisfactory physical interpretation. In this work, we propose an algorithm which fixes the shape of the enlarged space. Afterwards, we focus our attention on the consequences of our formalism, proposing a physical interpretation. 
Riccardo Junior Buonocore
hep-th