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Cosmology of Antisymmetric Tensor Field in D-brane Universe

Eung Jin Chun·Hang Bae Kim·Yoonbai Kim
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Abstract

We analyze homogeneous, anisotropic cosmology driven by a self-interacting ``massive'' antisymmetric tensor field $B_{μν}$ which is present in string theories with D-branes. Time-dependent magnetic $B$ field existing in the early universe can lead to the Bianchi type I universe. Evolutions of such a tensor field are solved exactly or numerically in the universe dominated by vacuum energy, radiation, and $B$ field itself. The matter-like behavior of the $B$ field (dubbed as ``$B$-matter'') ensures that the anisotropy disappears at late time and thus becomes unobservable in a reasonable cosmological scenario. Such a feature should be contrasted to the cosmology of the conventional massless antisymmetric tensor field.

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Eung Jin Chun, Hang Bae Kim, Yoonbai Kim. 2005-02-05. Cosmology of Antisymmetric Tensor Field in D-brane Universe. https://doi.org/10.1088/1126-6708%2F2005%2F03%2F036

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