Noncommutativity in space and primordial magnetic field.
In this paper we show that noncommutativity in spatial coordinates can generate 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 particles present at a given moment. This allows us to trace back the temperature dependence of the noncommutativity scale from the bounds on primordial magnetic field coming from nucleosynthesis.
Mazumdar
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The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, Trieste, Italy.
Sheikh-Jabbari
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