11 length scale on which the pseudospin polarization of in- jected electrons is relaxed, and therefore the length scale over which the pseudospin transfer torque acts. The advantage of this approach is that experimental data could be used to obtain the spatial distribution of pseu- dospin transfer torques. Examination of coherent bilayer transport data suggests 39 that the torques sometimes act along most of the perimeter of the system, as assumed in a previous 18 attempt to understand coherent-bilayer tunneling data, and sometimes close to the source and drain the contacts as assumed here. The current model is most appropriate well away from the coherent state phase boundary as we have discussed. The present version of the pseudospin transport torque theory does not account for thermal or quantum fluctua- tions of the condensate, which are unimportant in metal- lic ferromagnets but might sometimes be important in coherent bilayers. 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