Artículos de revistas
Non trivial frames for f(T) theories of gravity and beyond
Fecha
2011-06Registro en:
Ferraro, Rafael; Fiorini, Franco Luis; Non trivial frames for f(T) theories of gravity and beyond; Elsevier Science; Physics Letters B; 702; 1; 6-2011; 75-80
0370-2693
CONICET Digital
CONICET
Autor
Ferraro, Rafael
Fiorini, Franco Luis
Resumen
Some conceptual issues concerning f (T ) theories – a family of modified gravity theories based on absolute parallelism – are analyzed. Due to the lack of local Lorentz invariance, the autoparallel frames satisfying the field equations are evasive to an a priori physical understanding. We exemplify this point by working out the vierbein (tetrad) fields for closed and open Friedmann–Robertson–Walker cosmologies.