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  Self-generated disorder: from spin glasses to the glassy homopolymer globule

Rostiashvili, V. G., Migliorini, G., & Vilgis, T. A. (2002). Self-generated disorder: from spin glasses to the glassy homopolymer globule. Journal of Non-Crystalline Solids, 307, 199-207. doi:10.1016/S0022-3093(02)01459-X.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-6527-A Version Permalink: http://hdl.handle.net/21.11116/0000-0002-807D-1
Genre: Journal Article

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Rostiashvili, V. G.1, Author              
Migliorini, G.1, Author              
Vilgis, Thomas A.1, Author              
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: We have investigated the interrelation between spin glasses and structural glasses. Spin glasses in this case are p-spin interaction spin glasses (at p > 2) or Potts glasses which contain quenched disorder, whereas the structural glasses are here exemplified by the homopolymeric globule, which can be viewed as a liquid of connected units on nanoscales. It is argued that the homopolymeric globule problem can be mapped onto a disorder field theoretical model whose effective Hamiltonian resembles the corresponding one for the spin glass model. In this sense the disorder in the globule is self- generated (in contrast to spin glasses) and can be related with competing interactions (virial coefficients of different signs) and the chain connectivity. The work is aimed at giving a quantitative description of this analogy. We have investigated in the mean-field (MF) approximation the phase diagram of the homopolymeric globule where the transition line from the liquid to glassy globule is treated in terms of the replica symmetry breaking paradigm. The configurational entropy temperature dependence is also discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2002-09
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28605
ISI: 000178038100028
DOI: 10.1016/S0022-3093(02)01459-X
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Title: Journal of Non-Crystalline Solids
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 307 Sequence Number: - Start / End Page: 199 - 207 Identifier: ISSN: 0022-3093
CoNE: https://pure.mpg.de/cone/journals/resource/954925416961