104 citations · 219 across the 18 of their papers we have counts for
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Infinite-derivative linearized gravity in convolutional form
Carlos Heredia, Ivan Kolář, Josep Llosa +2
This article aims to transform the infinite-order Lagrangian density for ghost-free infinite-derivative linearized gravity into non-local. To achieve it, we use the theory of gener…
An extension of Poincaré group based on generalized Fermi-Walker coordinates
Josep Llosa
The class of accelerated and rotating reference frames has been studied on the basis of generalized Fermi-Walker coordinates. We obtain the infinitesimal transformations connecting…
An extension of Poincaré group abiding arbitrary acceleration
Josep Llosa
The class of accelerated reference frames has been studied, on the basis of Fermi-Walker coordinates. The infinitesimal transformations connecting two of these frames has been obta…
An extension of the principle of relativity for one-dimensional space
Josep Llosa
The class of accelerated reference frames has been studied, on the basis of Fermi-Walker coordinates; both in the cases of uniform and arbitrary accelerations. In the first case, e…
Matter and Ricci collineations
Josep Llosa
The infinitesimal transformations that leave invariant a two-covariant symmetric tensor are studied. The interest of these symmetry transformations lays in the fact that this class…
Flat deformation of a spacetime admitting two Killing fields
Josep Llosa, Jaume Carot
It is shown that given an analytic Lorentzian metric on a 4-manifold, , which admits two Killing vector fields, then it exists a local deformation law , where …