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Title: Molecular elasticity and the geometric phase
Authors: Samuel, J.
Sinha, Supurna
Issue Date: 6-Mar-2003
Publisher: The American Physical Society
Citation: Physical Review Letters, 2003, Vol.90, 098305
Abstract: We present a method for solving the wormlike-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 4pi. We develop an analogy between WLC elasticity and the geometric phase of a spin-(1/2) 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 such as DNA.
ISSN: 0031-9007
1079-7114 (online)
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Copyright: (2003) by the American Physical Society
Appears in Collections:Research Papers (TP)

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