4 papers
Spherically symmetric, asymptotically flat Berwald vacuum solutions in Finsler gravity
Nicoleta Voicu, Diana - Maria Birla, Christian Pfeifer
So-called Berwald-Finsler spacetimes are Finsler spacetimes that are closest to pseudo-Riemannian geometry, as their canonical nonlinear connection defines an affine connection on…
From kinetic gases to an exponentially expanding universe - The Finsler-Friedmann equation
Christian Pfeifer, Nicoleta Voicu, Annamaria Friedl-Szász +1
We investigate the gravitational field of a kinetic gas beyond its usual derivation from the second moment of the one-particle distribution function (1PDF), that serves as energy-m…
Cosmological Landsberg Finsler spacetimes
Annamária Friedl-Szász, Elena Popovici-Popescu, Nicoleta Voicu +2
We locally classify all possible cosmological homogeneous and isotropic Landsberg-type Finsler structures, in 4-dimensions. Among them, we identify viable non-stationary Finsler sp…
Metric-affine cosmological models and the inverse problem of the calculus of variations. Part II: Variational bootstrapping of the CDM model
Ludovic Ducobu, Nicoleta Voicu
The method of variational bootstrapping, based on canonical variational completion, allows one to construct a Lagrangian for a physical theory depending on two sets of field variab…