Tiny Graviton Matrix Theory On Time-Dependent Background

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Chen, Bin
Liu, Xiao
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In this article we construct a tiny graviton matrix model for type IIB string theory on a plane-wave background with null dilaton. For the linear null dilaton case, we analyze its vacuum and the excitation spectrum around the vacuum, and discuss the time-dependent fuzzy three-sphere solutions and their evolution. It turns out that at very late time the non-Abelian fuzzy degrees of freedom disappear, which indicates the appearance of perturbative strings.
Comment: 20 pages and 4 figures; published version, with more clarifications
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High Energy Physics - Theory
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