Dale, Roberto; Herrero Debón, Alicia; Morales-Lladosa, Juan Antonio(IOP Publishing, 2023-08-01)
[EN] For a single fermionic field, an interpretation of the Fierz identities (which establish relations between the bilinear field observables) is given. They appear closely related to the algebraic class (regular or ...
A certain vector-tensor (VT) theory of gravitation was tested in previous papers. In the background universe, the vector field of the theory has a certain energy density, which is appropriate to play the role of vacuum ...