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arXiv · 1409.8127

Efimov like phase of a three stranded DNA (Efimov-DNA) and the renormalization group limit cycle

Tanmoy Pal·Poulomi Sadhukhan·Somendra M. Bhattacharjee
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Abstract

A three-stranded DNA with short range base pairings only is known to exhibit a classical analog of the quantum Efimov effect, viz., a three chain bound state at the two chain melting point where no two are bound. By using a non-perturbative renormalization group method for a rigid duplex DNA and a flexible third strand, with base pairings and strand exchange, we show that the Efimov-DNA is associated with a limit cycle type behavior of the flow of an effective three chain interaction. The analysis also shows that thermally generated bubbles play an essential role in producing the effect. A toy model for the flow equations shows the limit cycle in an extended three dimensional parameter space of the two-chain coupling and a complex three chain interaction.

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Tanmoy Pal, Poulomi Sadhukhan, Somendra M. Bhattacharjee. 2014-09-29. Efimov like phase of a three stranded DNA (Efimov-DNA) and the renormalization group limit cycle. https://doi.org/10.1103/physreve.91.042105

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