https://doi.org/10.1140/epjb/e2004-00195-8
Post Gaussian effective potential in the Ginzburg Landau theory of superconductivity
Institute of Physics and Applied Physics, Younsei University, Seoul, 120-749, Korea
Corresponding authors: a ckkim@phya.yonsei.ac.kr - b rakhimovabd@yandex.ru - c jhyee@phya.yonsei.ac.kr
Received:
11
November
2003
Published online:
12
July
2004
The post Gaussian effective potential in D=3 dimensions and
the Gaussian effective potential in 
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 κ 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 Tc superconductivity.
PACS: 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 11.15.Ex – Spontaneous breaking of gauge symmetries / 74.20.De – Phenomenological theories (two-fluid, Ginzburg-Landau, etc.) / 11.15.Tk – Other nonperturbative techniques
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
