• Application of Herglotz's variational principle to electromagnetic systems with dissipation 

      Gaset, Jordi; Marin-Salvador, Adria (International Journal of Geometric Methods in Modern Physics, 2022)
      This work applies the contact formalism of classical mechanics and classical field theory, introduced by Herglotz and later developed in the context of contact geometry, to describe electromagnetic systems with dissipation. ...
    • Inverse problem and equivalent contact systems 

      de León, Manuel; Gaset, Jordi ; Lainz, Manuel (Journal of Geometry and Physics, 2022)
      We present several results on the inverse problem and equivalent contact Lagrangian systems. These problems naturally lead to consider smooth transformations on the z variable (i.e., reparametrizations of the action). We ...