Probing Type I' String Theory Using D0 and D4-Branes

Details Probing Type I' String Theory Using D0 and D4-Branes Probing Type I' String Theory Using D0 and D4-Branes

1997-07-15

arxiv.org/abs/hep-th/9707132v2

Phys.Lett. B415 (1997) 135-143

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, latex. References added and some typos corrected

Scientific paper

10.1016/S0370-2693(97)01255-0

We analyse the velocity-dependent potentials seen by D0 and D4-brane probes moving in Type I' background for head-on scattering off the fixed planes. We find that at short distances (compared to string length) the D0-brane probe has a nontrivial moduli space metric, in agreement with the prediction of Type I' matrix model; however, at large distances it is modified by massive open strings to a flat metric, which is consistent with the spacetime equations of motion of Type I' theory. We discuss the implication of this result for the matrix model proposal for M-theory. We also find that the nontrivial metric at short distances in the moduli space action of the D0-brane probe is reflected in the coefficient of the higher dimensional v^4 term in the D4-brane probe action.

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