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Noncommutativity in Space and Primordial Magnetic Field

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Article number011301
<mark>Journal publication date</mark>19/06/2001
<mark>Journal</mark>Physical Review Letters
Issue number1
Number of pages4
<mark>Original language</mark>English


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.

Bibliographic note

© 2001 The American Physical Society Revtex, 4 pages, v3: very minor changes, the version to appear in PRL