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Molecular elasticity and the geometric phase | | Joseph Samuel
; Supurna Sinha
; | | Date: |
24 Mar 2002 | | Journal: | Physical Review Letters Vol. 90,098305, (2003) | | Subject: | Condensed Matter; Biomolecules | cond-mat q-bio.BM quant-ph | | Abstract: | We present a method for solving the Worm Like Chain (WLC) model for twisting semiflexible polymers to any desired accuracy. We show that the WLC free energy is a periodic function of the applied twist with period 4 pi. We develop an analogy between WLC elasticity and the geometric phase of a spin half system. These analogies are used to predict elastic properties of twist-storing polymers. We graphically display the elastic response of a single molecule to an applied torque. This study is relevant to mechanical properties of biopolymers like DNA. | | Source: | arXiv, cond-mat/0203491 | | Other source: | [GID 234261] pmid12689262 | | Services: | Forum | Review | PDF | Favorites | |
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