Concept

Hypothèse ergodique

Publications associées (34)

Self-field effects in large superconducting cables for ITER

Preliminary results of a new stochastic model for the self-field effect in large Cable In Conduit Conductors (CICC) are presented. We show that the electric properties of CICC can be inferred by using only one (arbitrary and not necessary exact) strand tra ...

2001

Mechanism of polarization response in the ergodic phase of a relaxor ferroelectric

Alexander Tagantsev

It is shown that the effects of large de bias and ac driving fields on the dielectric permittivity of single crystals of PbMg1/3Nb2/3O3 (PMN) relaxer ferroelectric exhibit very different behavior, including anisotropy and sign of the effect, which is trace ...

1998

Evidence for domain-type dynamics in the ergodic phase of the PbMg1/3Nb2/3O3 relaxor ferroelectric

Alexander Tagantsev

It was observed that the dielectric permittivity of PbMg1/3Nb2/3O3 (PMN) relaxer ceramics increases with increasing amplitude of the applied ac field. A strong nonlinearity occurs at temperatures where the frequency dispersion of the dielectric response is ...

1996

On transport in porous formations characterized by heterogeneity of evolving scales

Andrea Rinaldo

Solute transport in natural formations at the regional scale is influenced by several scales of heterogeneity which correspond to the presence of several geological units called facies. As customarily assumed in stochastic theories, inside the facies the t ...

1996

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