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Comment on "Primordial magnetic seed field amplification by gravitational waves"
Physical Review D
We consider the amplification of cosmological magnetic fields by gravitational waves as it was recently presented in [gr-qc/0503006]. That study confined to infinitely conductive environments, arguing that on spatially flat Friedmann backgrounds the gravito-magnetic interaction proceeds always as if the universe were a perfect conductor. We explain why this claim is not correct and then re-examine the Maxwell-Weyl coupling at the limit of ideal magnetohydrodynamics. We find that the scales ofdoi:10.1103/physrevd.75.087901 fatcat:pqzbxrwpbrhdfh3xvu3sfecsoe