Creation of a brane world with a bulk scalar field

Koh Suke Aoyanagi*, Kei Ichi Maeda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We investigate a creation of a brane world with a bulk scalar field. We consider an exponential potential of a bulk scalar field; V(φ) ∝ (-2βφ), where β is the parameter of the theory. This model is based on a supersymmetric theory, and includes Randall-Sundrum model (β = 0) and the 5-dimensional effective model of the Horva-Witten theory (β = 1). We show that for this potential a brane instanton is constructed only when a curvature of a brane vanishes, that is, the brane is flat. We construct an instanton with two branes and a singular instanton with a single brane. The Euclidean action of the singular instanton solution is finite if β2 > 2/3. We also calculate perturbations of the action around a singular instanton solution in order to show that the singular instanton is well-defined.

Original languageEnglish
Pages (from-to)219-220
Number of pages2
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2006 Mar 22
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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