P-P' Strings in M(atrix) Theory

Details P-P' Strings in M(atrix) Theory P-P' Strings in M(atrix) Theory

1997-06-10

arxiv.org/abs/hep-th/9706073v3

Nucl.Phys. B525 (1998) 146-162

Physics

High Energy Physics

High Energy Physics - Theory

minor modification, references added. 21 pages, Latex, minor modification made

Scientific paper

10.1016/S0550-3213(98)00241-7

We study the off-diagonal blocks in the M(atrix) model that are supposed to correspond to open strings stretched between a Dp-brane and a Dp'-brane. It is shown that the spectrum, including the quantum numbers, of the zero modes in the off-diagonal blocks can be determined from the index theorem and unbroken supersymmetry, and indeed reproduces string theory predictions for p-p' strings. Previously the matrix description of a longitudinal fivebrane needed to introduce extra degrees of freedom corresponding to 0-4 strings by hand. We show that they are naturally associated with the off-diagonal zero modes, and the supersymmetry transformation laws and low energy effective action postulated for them are now derivable from the M(atrix) theory.

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