A supersymmetric type IIB Randall–Sundrum realization

We show that an earlier domain wall solution of type IIB supergravity provides a supersymmetric realization of the Randall–Sundrum brane-world, and give its ten-dimensional interpretation in terms of IIB 3-branes. We also explain how previous no-go theorems are circumvented. In particular, whereas D = 5D=5 supergravity scalars have AdS5AdS5 energy E0 ⩽ 4E0⩽4 and are unable to support a D = 5D=5 positive tension brane, our scalar has E0 = 8,E0=8, and is the breathing mode of the S5S5 compactification. Another essential element of the construction is the implementation of a Z2Z2 symmetry by patching together compactifications with opposite signs for their 5-form field strengths. This is thus a IIB analog of a previous D = 5D=5 3-brane realization of the Hořava–Witten orbifold. A mode-locking phenomenon avoids the appearance of negative energy zero-modes in spite of the necessity of a D = 10D=10 negative tension brane-source. © 2001 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70278/2/JMAPAQ-42-7-3027-1.pd