相关论文: Second-order perturbation theory for the parametri…

The paper was withdrawn by the author. Further research is needed.

This paper was withdrawn by the author.

This paper has been withdrawn by the author.

The paper has been temporarily withdrawn by the authors.

This paper has been withdrawn by the author(s) due to the discussion was made on the basis of linear term merely, which is incomplete.

%auto-ignore This paper has been withdrawn by the authors.

This paper has been withdrawn by the author due to a crucial error in equation.

This paper has been withdrawn by the author due to the need for further revision.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to an error

This paper has been withdrawn by the author

This paper has been withdrawn by the author.

This paper has been withdrawn by the author(s), due to double submission. You can find it under: physics/0208019

The paper was withdrawn by the authors

This paper has been withdrawn by the author.

This paper has been withdrawn by the author.The formula which was proposed gives only a second order deformation.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to a mistake in the proof of the main theorem.

This paper was withdrawn by the authors.

This paper has been withdrawn by the author due to the paper does not belong to Condensed Matter field.