Phase transition in non-equilibrium thermo field dynamics

I. Hardman, H. Umezawa, Y. Yamanaka

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The phase transition between ordered and disordered states is discussed within the framework of non-equilibrium Thermo Field Dynamics (TFD), in which the time-dependent thermal Bogoliubov transformation takes care of the temporal change of quasi-particles. Thus, the system, which is closed, passes through a continuum of out of equilibrium states in going from one phase to another. The formalism is presented for the superfluid model. The time evolution of the system is determined by the self-consistent renormalization conditions which give us equations for the order parameter, number distributions, dissipative coefficients and renormalized energies. A differential Ward-Takahashi relation, rather than an integral one, is combined with the renormalization condition to study the zero momentum mode.

本文言語English
ページ(範囲)326-335
ページ数10
ジャーナルPhysica A: Statistical Mechanics and its Applications
158
1
DOI
出版ステータスPublished - 1989 5 15
外部発表はい

ASJC Scopus subject areas

  • 統計学および確率
  • 凝縮系物理学

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