  Bekenstein's alternative to general relativity, TeVeS, reduces to Modified
Newtonian Dynamics (MOND) in the galactic limit. On cosmological scales, the
(potential well <-> overdensity) relationship is quite different than in
standard general relativity. Here we investigate the possibility of
cross-correlating galaxies with the cosmic microwave background (CMB) to probe
this relationship. At redshifts of order 2, the sign of the CMB-galaxy
correlation differs in TeVeS from that in general relativity. We show that this
effect is detectable and hence can serve as a powerful discriminator of these
two models of gravity.
