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De Sitter and double irregular domain walls

Abstract:

A new method to obtain thick domain wall solutions to the coupled Einstein scalar field system is presented. The procedure allows the construction of irregular walls from well known ones, such that the spacetime associated to them are physically different. As consequence of the approach, we obtain two irregular geometries corresponding to thick domain walls with dS expansion and topological double kink embedded in AdS spacetime. In particular, the double brane can be derived from a fake superpotential.