Slow decay of magnetic fields in open Friedmann universes

@misc{citeulike:2985491, abstract = {We describe how magnetic fields in Friedmann universes can experience superadiabatic growth without departing from conventional electromagnetism. The reason is the relativistic coupling between vector fields and spacetime geometry, which slows down the decay of large-scale magnetic fields in open universes, compared to that seen in perfectly flat models. The result is a large relative gain in magnetic strength during the pre-galactic era that can lead to astrophysically interesting B-fields, even if our universe is only marginally open today.}, author = {Barrow, John D. and Tsagas, Christos G. }, citeulike-article-id = {2985491}, eprint = {0803.0660}, keywords = {cosmology, fun, magnetic, theory}, month = {Mar}, posted-at = {2008-07-10 16:40:24}, priority = {2}, title = {Slow decay of magnetic fields in open Friedmann universes}, url = {http://arxiv.org/abs/0803.0660}, year = {2008} }

TY - ELEC ID - citeulike:2985491 L3 - citeulike-article-id:2985491 TI - Slow decay of magnetic fields in open Friedmann universes N2 - We describe how magnetic fields in Friedmann universes can experience superadiabatic growth without departing from conventional electromagnetism. The reason is the relativistic coupling between vector fields and spacetime geometry, which slows down the decay of large-scale magnetic fields in open universes, compared to that seen in perfectly flat models. The result is a large relative gain in magnetic strength during the pre-galactic era that can lead to astrophysically interesting B-fields, even if our universe is only marginally open today. KW - cosmology KW - fun KW - magnetic KW - theory AU - Barrow, John AU - Tsagas, Christos PY - 2008/Mar/24/ UR - http://arxiv.org/abs/0803.0660 ER -