TY - JOUR
T1 - Nonlinear electrodynamics in Bianchi spacetimes
AU - García-Salcedo, Ricardo
AU - Bretón, Nora
PY - 2003/12/21
Y1 - 2003/12/21
N2 - We study the effects produced by nonlinear electrodynamics in spacetimes conformal to Bianchi metrics. In the presence of Born-Infeld-type fields these models accelerate, expand and isotropize. This effect is compared with that corresponding to a linear electromagnetic field; it turns out that for the same geometry, a Maxwell field does not favour inflation as much as a Born-Infeld field. The behaviour of the nonlinear radiation is analysed in terms of the equations of state. The energy conditions are analysed as well, showing that the Born-Infeld field violates the strong energy condition.
AB - We study the effects produced by nonlinear electrodynamics in spacetimes conformal to Bianchi metrics. In the presence of Born-Infeld-type fields these models accelerate, expand and isotropize. This effect is compared with that corresponding to a linear electromagnetic field; it turns out that for the same geometry, a Maxwell field does not favour inflation as much as a Born-Infeld field. The behaviour of the nonlinear radiation is analysed in terms of the equations of state. The energy conditions are analysed as well, showing that the Born-Infeld field violates the strong energy condition.
UR - http://www.scopus.com/inward/record.url?scp=0346991445&partnerID=8YFLogxK
U2 - 10.1088/0264-9381/20/24/014
DO - 10.1088/0264-9381/20/24/014
M3 - Artículo
SN - 0264-9381
VL - 20
SP - 5425
EP - 5437
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
IS - 24
ER -