Fermion Casimir energy for a de Sitter brane in AdS(5)

Details Fermion Casimir energy for a de Sitter brane in AdS(5) Fermion Casimir energy for a de Sitter brane in AdS(5)

2003-03-02

arxiv.org/abs/hep-th/0303003v2

Physics

High Energy Physics

High Energy Physics - Theory

Talk given at the 12th Workshop on General Relativity and Gravitation, University of Tokyo, Tokyo, Japan, 25-28 Nov 2002

Scientific paper

Based on some recent work of the authors, we focus on the relationship between the Casimir energy of a Majorana spinor field for a Euclidean Einstein universe $S^4\times R$ and for a Euclidean de Sitter brane ($S^4$) embedded in AdS(5). This is for a conformally coupled massless field. Interestingly, the one brane effective potential is zero and the results are equivalent, as for the scalar case, when evaluated on the conformally related cylinder. However, using the actual metric this equivalence no longer holds because a non-trivial contribution from the path integral measure (known as the cocycle function) is non-zero.

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