A. Mazumdar et Mm. Sheikh-jabbari, Noncommutativity in space and primordial magnetic field - art. no. 011301, PHYS REV L, 8701(1), 2001, pp. 1301-NIL_26
In this paper we show that noncommutativity in spatial coordinates can gene
rate magnetic field in the early Universe on a horizon scale. The strength
of such a magnetic field depends on the number density of massive charged p
articles present at a given moment. This: allows us to trace back the tempe
rature dependence of the noncommutativity scale from the bounds on primordi
al magnetic field coming from nucleosynthesis.