Unexpected scenario of glass transition in polymer globules: an exactly enumerable model

Details Unexpected scenario of glass transition in polymer globules: an exactly enumerable model Unexpected scenario of glass transition in polymer globules: an exactly enumerable model

1999-05-07

arxiv.org/abs/cond-mat/9905105v1

Phys. Rev. Lett., v. 84, p. 2417, 2000

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.84.2417

We introduce a lattice model of glass transition in polymer globules. This model exhibits a novel scenario of ergodicity breaking in which the disjoint regions of phase space do not arise uniformly, but as small chambers whose number increases exponentially with polymer density. Chamber sizes obey power law distribution, making phase space similar to a fractal foam. This clearly demonstrates the importance of the phase space geometry and topology in describing any glass-forming system, such as semicompact polymers during protein folding.

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