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Casimir eect between moving branes Antonio L. Maroto Physics Department, Stanford University, Stanford CA 94305-4060, USA and Depa rta mento de F´ ısic a Te´orica Universidad Complutense de Madrid 28040 Madrid, Spain ABSTRACT We consider a supersymmetric model with a single matter supermultiplet in a ve-dimensional space -time with orbifold compacti cati on along the fth dimension. The boundary condi tions on the two orbifold planes are chosen in such a way that supersymmetry remains unbroken on the boundaries. We calculate the vacuum energy-momentum tensor in a conguration in which the boundary branes are moving with constant velocity. The results show that the contribution from fermions cancels that of bosons only in the static limit, but in general a velocity-dependent Casimir energy arises betw een the brane s. W e relat e this eect to the particle production due to the branes motion and nally we discuss some cosmological consequences. PACS numbers: 11.10.Kk, 98.80.Cq E-mail: maroto@s.ucm.es

Antonio L. Maroto- Casimir effect between moving branes

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