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arXiv · hep-th/0510117

Can thick braneworlds be self-consistent?

Masato Minamitsuji·Wade Naylor·Misao Sasaki
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Abstract

We discuss the backreaction of a massless, minimally coupled, quantized scalar field on a thick, two-dimensional de Sitter (dS) brane as an extension of our previous work. We show that a finite brane thickness naturally regularizes the backreaction on the brane. The quantum backreaction exhibits a quadratic divergence in the thin wall limit. We also give a theoretical bound on the brane thickness, in terms of the brane self-consistency of the quantum corrected Einstein equation, namely the requirement that the size of the backreaction should be smaller than that of the background stress-energy at the center of the brane. Finally, we discuss the brane self-consistency for the case of a four-dimensional dS brane.

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Masato Minamitsuji, Wade Naylor, Misao Sasaki. 2005-10-25. Can thick braneworlds be self-consistent?. https://doi.org/10.1016/j.physletb.2005.12.030

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