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Erratum: Dynamical spatial-pattern memory in globally coupled lasers

We examine the fluctuation-induced interaction energy Δf between the surfaces of a layered hexatic film within a quadratic-functional-integral approach. Both discrete and continuum formulations are studied. We find large corrections to the asymptotic behavior Δf(l)∞l -2 for finite l, where l is the film thickness. A small field becomes relevant beyond a length scale ξ(h), while an enhanced surface Frank constant is irrelevant above a length ξ(K). Possible relevance of these results to recent experiments on layer-by-layer surface ordering in liquid-crystal films is discussed