47 citations · 399 across the 28 of their papers we have counts for
6 papers · 2 filters
Physics of Relativistic Perfect Fluids
Bartolomé Coll, Joan Josep Ferrando
A criterion is presented and discussed to detect when a divergence-free perfect fluid energy tensor in the space-time describes an evolution in local thermal equilibrium. This crit…
On the thermodynamics of inhomogeneous perfect fluid mixtures
Bartolomé Coll, Joan Josep Ferrando
It is shown that inhomogeneous Szekeres and Stephani universes exist corresponding to non-dissipative binary mixtures of perfect fluids in local thermal equilibrium. This result co…
Ideal Gas Stephani Universes
Bartolomé Coll, Joan Josep Ferrando
The Stephani Universes that can be interpreted as an ideal gas evolving in local thermal equilibrium are determined, and the method to obtain the associated thermodynamic schemes i…
On the Leibniz bracket, the Schouten bracket and the Laplacian
Bartolomé Coll, Joan Josep Ferrando
The Leibniz bracket of an operator on a (graded) algebra is defined and some of its properties are studied. A basic theorem relating the Leibniz bracket of the commutator of two op…
A principal positioning system for the Earth
Bartolomé Coll
The project SYPOR wishes to use the global navigation satellite system GALILEO as an autonomous relativistic positioning system for the Earth. Motivations and a sketch of the basic…
Concepts for a Theory of the Electromagnetic Field
Bartolome Coll
The object of this contribution is twofold. On one hand, it rises some general questions concerning the definition of the electromagnetic field and its intrinsic properties, and it…