Aging and effective temperatures near a critical point

Abstract : The orientation fluctuations of the director of a liquid crystal(LC) are measured after a quench near the Fréedericksz transition, which is a second order transition driven by an electric field. We report experimental evidence that, because of the critical slowing down, the LC presents, after the quench, several properties of an aging system, such as power law scaling versus time of correlation and response functions. During this slow relaxation, a well defined effective temperature, much larger than the heat bath temperature, can be measured using the fluctuation dissipation relation.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2009, 102 (13), pp.130601
Liste complète des métadonnées

Littérature citée [12 références]  Voir  Masquer  Télécharger

https://hal-ens-lyon.archives-ouvertes.fr/ensl-00327521
Contributeur : Sergio Ciliberto <>
Soumis le : vendredi 6 mars 2009 - 15:50:08
Dernière modification le : jeudi 19 avril 2018 - 14:54:03
Document(s) archivé(s) le : jeudi 23 septembre 2010 - 17:07:25

Fichiers

aging_critical_v11.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : ensl-00327521, version 3
  • ARXIV : 0810.1392

Collections

Citation

Sylvain Joubaud, Baptiste Percier, Artyom Petrosyan, Sergio Ciliberto. Aging and effective temperatures near a critical point. Physical Review Letters, American Physical Society, 2009, 102 (13), pp.130601. 〈ensl-00327521v3〉

Partager

Métriques

Consultations de la notice

87

Téléchargements de fichiers

89