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arXiv 0704.1391cond-mat.soft
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刚性聚合物的路径积分在膜物理中的应用

Path integrals for stiff polymers applied to membrane physics

D. S. Dean, R. R. Horgan

摘要:

类似于描述刚性聚合物的路径积分出现在膜的Helfrich模型中。我们展示了如何这些类型的路径积分可以评估和应用我们的研究结果,在散装膜的少数条纹相的热力学。波动引起的贡献的条纹和体相之间的线张力计算,以及在无张力的情况下,这两个阶段具有不同的弯曲刚度的两个阶段之间的有效相互作用。

英文摘要:

Path integrals similar to those describing stiff polymers arise in the Helfrich model for membranes. We show how these types of path integrals can be evaluated and apply our results to study the thermodynamics of a minority stripe phase in a bulk membrane. The fluctuation induced contribution to the line tension between the stripe and the bulk phase is computed, as well as the effective interaction between the two phases in the tensionless case where the two phases have differing bending rigidities.

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