Abstract
We apply both self‐consistent‐field theory (SCFT) and strong‐segregation theory (SST) to the lamellar phase of a melt of linear multiblock copolymers. We present a new solution for the SST which now agrees with that obtained for the SCFT. Using both theories, we calculate the distribution of monomers from the center of blocks originating from a single interface, the lamellar spacing, and the fraction of blocks which bridge across lamellae.