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Noncommutativity in space and primordial magnetic field
A Mazumdar1, M M Sheikh-Jabbari
1The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, Trieste, Italy.
Physical Review Letters
|July 20, 2001
Abstract:
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.