`Towards the field theory of  `Standard Model' D-brane worlds'

D-brane worlds have shown to be able to accommodate (extensions of)
the Standard Model spectrum.  To firmly establish the existence of
Standard Model vacua in intersecting D-brane configurations, it is,
however, necessary to also match the low-energy effective couplings.
In this talk, I will briefly review the construction of intersecting
D-brane vacua and matter spectra and then proceed to discuss the gauge
and Yukawa couplings derived from string perturbation theory.