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Confined Space and Effective Interactions of Multiple Self-Avoiding Chains
Physical Review Letters
We study the link between three seeming-disparate cases of self-avoiding polymers: strongly overlapping multiple chains in dilute solution, chains under spherical confinement, and the onset of semidilute solutions. Our main result is that the free energy for overlapping n chains is independent of chain length and scales as n 9=4 , slowly crossing over to n 3 , as n increases. For strongly confined polymers inside a spherical cavity, we show that rearranging the chains does not cost andoi:10.1103/physrevlett.98.128303 pmid:17501165 fatcat:brckn6h5f5dnpaedmbacghmaea