Published 1976 | Version v1
Journal article Metadata-only

Three-critical phenonenum physics

Creators

  • 1. Centre National de la Recherche Scientifique, 38 - Grenoble (France). Centre de Recherches sur les Tres Basses Temperatures

Description

Definitions are given: thermodynamical definition (order of a critical point); geometrical definition (relevant fields); scaling laws, competition and cross over. Examples are presented: metamagnets, isotopic helium mixtures, classical multicomponents mixtures. Nature of fixed point, Ginzburg criterion and bordeline space dimensionality, non gaussian fixed points (dimensionality and anisotropy of order parameter) and pathological polycritical points are discussed. Finally the questions open by the study of this phenomena and remarks on dynamical properties are presented

Abstract (French)

On donne des definitions: definition thermodynamique (ordre d'un point critique); definition geometrique (champs pertinents); lois d'echelle, competition et ''cross over''. Des exemples sont presented en metamagnetique, melanges isotopiques d'helium, melanges classiques a plusieurs composantes. On discute de la nature du point fixe du critere de Ginzburg et de la dimensionalite d'espace caracteristique, des points fixes non gaussiens (dimensionalite et anisotropie du parametre d'ordre), des points polycritiques pathologiques. Enfin on presente les questions ouvertes par l'etude de ces phenomenes et des remarques sur les proprietes dynamiques

Additional details

Additional titles

Original title (French)
Physique des phenomenes tricritiques

Publishing Information

Journal Title
J. Phys. (Paris), Colloq.
Journal Issue
no.1
Series
J. Phys. (Paris), Colloq.

Conference

Title
Colloquium critical phenomena.
Dates
30 Jun 1975.
Place
Dijon, France.

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
7266530
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
MIXTURES; PHASE TRANSFORMATIONS; RENORMALIZATION
Descriptors DEC
DISPERSIONS