Jaya Maji, Somendra M. Bhattacharjee
We study the melting of a three stranded DNA by using real space renormalization group and exact recursion relations. The prediction of an unusual Efimov-analog three chain bound state, that appears at the critical melting of a two chain DNA, is corroborated from the zeros of the partition function. The distribution of the zeros have been studied in detail for various situations. We show that the Efimov DNA can occur even if the three chain (i. e., three monomer) interaction is repulsive in nature. In higher dimensions, a striking result that emerged in this repulsive zone is a continuous transition from the critical state to the Efimov DNA.
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http://arxiv.org/abs/1207.3670
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