Post Gaussian effective potential in the Ginzburg Landau theory of superconductivity

Details Post Gaussian effective potential in the Ginzburg Landau theory of superconductivity Post Gaussian effective potential in the Ginzburg Landau theory of superconductivity

2003-11-11

arxiv.org/abs/cond-mat/0311226v2

Eur.Phys.J. B39 (2004) 301

Physics

Condensed Matter

Superconductivity

15 pages, RevTeX, 4 figures, minor changes has been made

Scientific paper

10.1140/epjb/e2004-00195-8

The post Gaussian effective potential in D=3 dimensions and the Gaussian effective potential in D=2+epsilon are evaluated for the Ginzburg-Landau theory of superconductivity. It is shown that, the next order correction to the Gaussian approximation of the Ginzburg-Landau parameter (kappa) is significant, whereas contribution from the two dimensionality is rather small. This strongly indicates that strong correlation plays a more dominant role than the two dimensionality does in high T_c superconductivity.

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