Speaker
Sarahí Silva García
(Universidad Nacional Autónoma de México)
Description
In this work, we demonstrate that identifying the matter Lagrangian with the pressure leads to physical inconsistencies, which are resolved when the fluid is coupled to the gravitational field. In such a scenario, the matter Lagrangian necessarily assumes the value ofthe total energy density. We thus conclude that, for an ideal fluid, the only physically consistent choice for the matter Lagrangian is its total energy density.
Authors
Sarahí Silva García
(Universidad Nacional Autónoma de México)
Dr
Sergio Mendoza Ramos
(Instituto de Astronomía, Universidad Nacional Autónoma de México)