a slit left and a slit right (dashed line), as a function of $h/a$. The difference is the interaction free energy mediated by the polymer.[]{data-label="f:2slitsprobaN"}](./figures/2slitsF "fig:"){width="0.49\columnwidth"}]{}

We thank M. Bauer, D. Bernard, T. Emig, C. Hagendorf, Y. Kantor and M. Kardar for useful discussions. This work was supported by ANR under program 05-BLAN-0099-01, and in part through NSF grant PHY05-51164 during the program Fluctuate08 at KITP.

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