Aging in a free-energy landscape model for glassy relaxation
| dc.contributor.author | Böhmer, Roland | |
| dc.contributor.author | Diezemann, G. | |
| dc.date.accessioned | 2008-06-12T06:59:22Z | |
| dc.date.available | 2008-06-12T06:59:22Z | |
| dc.date.issued | 2006 | |
| dc.description.abstract | Several fluctuation-dissipation relations are investigated for a simple free-energy landscape model designed to describe the primary relaxation in supercooled liquids. The calculations of the response and of the correlation functions are performed for a quench from a high temperature to a low temperature. In the model, all dynamical quantities reach equilibrium after long times, but for times shorter than the re-equilibration time they do not exhibit time-translational invariance and the fluctuation-dissipation theorem is violated. Two measures for these violations are considered. One such measure is given by the slope in a plot of the integrated response versus the correlation function and another one by the so-called fluctuation-dissipation ratio. It is found that these measures do not coincide and furthermore are not independent of the dynamical variable considered in the calculation. We propose to determine the fluctuation-dissipation ratio experimentally via measurements of the deuteron spin-lattice relaxation rate and the dielectric loss | en |
| dc.identifier.doi | 10.1103/PhysRevE.74.021506 | |
| dc.identifier.uri | http://hdl.handle.net/2003/25512 | |
| dc.identifier.uri | http://dx.doi.org/10.17877/DE290R-3214 | |
| dc.identifier.url | http://dx.doi.org/10.1103/PhysRevE.74.021506 | |
| dc.language.iso | en | de |
| dc.publisher | American Institute of Physics | en |
| dc.rights | ©2006 American Institute of Physics | en |
| dc.subject.ddc | 530 | |
| dc.title | Aging in a free-energy landscape model for glassy relaxation | en |
| dc.title.alternative | II. Fluctuation-dissipation relations | en |
| dc.type | Text | de |
| dc.type.publicationtype | article | de |
| dcterms.accessRights | restricted |
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