Spontaneous Creation of the Brane World and Direction of the Time Arrow
arXiv:hep-th/0606072 · doi:10.1016/j.physletb.2007.01.034
Abstract
In this note we consider the spontaneous creation of the brane world in five-dimensional space with nondynamical external four-form field via spherically asymmetric bounce solution. We argue that spherically asymmetric bounce suggests several inequivalent directions of the time arrow upon the analytic continuation to the space-time with Lorentzian signature. It it shown that S-branes in the imaginary time emerge naturally upon the particular continuation.
arXiv comment12 pages, 3 figures
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