New Perspectives on Moving Domain Walls in (A)dS_(5) Space

Details New Perspectives on Moving Domain Walls in (A)dS_(5) Space New Perspectives on Moving Domain Walls in (A)dS_(5) Space

2001-03-07

arxiv.org/abs/hep-th/0103045v2

Nucl.Phys. B622 (2002) 347-364

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, LaTeX, 3 figures, few clarifications and references added

Scientific paper

10.1016/S0550-3213(01)00589-2

A new moving domain wall solution is obtained for a flat 3-universe. This consists of a bulk metric depending on both time and the extra coordinate, plus a dynamically interacting domain wall, admitted by the metric and inhabited by the three-universe. The matter contents are cosmological constants on the domain wall and the bulk. The bulk space is shown to be (A)dS_(5). A remarkable fact concerning the three-universe is that its scale factor never vanishes, even though the corresponding scale factor of the bulk metric vanishes. The inclusion of a bulk scalar field is discussed, neglecting back-reaction. Its normalizability and the existence of a positive frequency or adiabatic bulk vacuum are shown.

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