| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sollich, Peter
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Topics
Publications (17/17 displayed)
- 2022Delayed elastic contributions to the viscoelastic response of foamscitations
- 2018On the existence of thermodynamically stable rigid solidscitations
- 2017Aging and linear response in the Hébraud–Lequeux model for amorphous rheologycitations
- 2015Non-affine fluctuations and the statistics of defect precursors in the planar honeycomb latticecitations
- 2012Unified study of glass and jamming rheology in soft particle systemscitations
- 2006Simulation estimates of cloud points of polydisperse fluids
- 2006Simulation estimates of cloud points of polydisperse fluidscitations
- 2006Phase behavior of weakly polydisperse sticky hard spheres: Perturbation theory for the Percus-Yevick solution
- 2005Effects of polymer polydispersity on the phase behaviour of colloid-polymer mixturescitations
- 2005Dynamic Heterogeneity in the Glauber-Ising chain
- 2005Liquid-vapour phase behaviour of a polydisperse Lennard-Jones fluidcitations
- 2005Effects of colloid polydispersity on the phase behavior of colloid-polymer mixturescitations
- 2003Fluctuation-dissipation relations in the nonequilibrium critical dynamics of Ising modelscitations
- 2003Equivalence of driven and aging fluctuation-dissipation relations in the trap modelcitations
- 2002Observable dependence of fluctuation-dissipation relations and effective temperaturescitations
- 2001Predicting phase equilibria in polydisperse systemscitations
- 2000Aging and rheology in soft materialscitations
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article
Fluctuation-dissipation relations in the nonequilibrium critical dynamics of Ising models
Abstract
We investigate the relation between two-time multispin correlation and response functions in the nonequilibrium critical dynamics of Ising models in d=1 and d=2 spatial dimensions. In these nonequilibrium situations, the fluctuation-dissipation theorem (FDT) is not satisfied. We find FDT "violations" qualitatively similar to those reported in various glassy materials, but quantitatively dependent on the chosen observable, in contrast to the results obtained in infinite-range glass models. Nevertheless, all FDT violations can be understood by considering separately the contributions from large wave vectors, which are at quasiequilibrium and obey the FDT, and from small wave vectors where a generalized FDT holds with a nontrivial fluctuation-dissipation ratio X-infinity. In d=1, we get X-infinity=1/2 for spin observables, which measure the orientation of domains, while X-infinity=0 for observables that are sensitive to the domain-wall motion. Numerical simulations in d=2 reveal a unique X(infinity)similar or equal to0.34 for all observables. Measurement protocols for X-infinity are discussed in detail. Our results suggest that the definition of an effective temperature T-eff=T/X-infinity for large length scales is generically possible in nonequilibrium critical dynamics.