Related papers: Spontaneous Lorentz symmetry breaking and cosmolog…

This paper has been withdrawn due a crucial mistake due to a crucial mistake in the proof of Lemma 2.3.

This paper has been withdrawn by the authors, due to a mistake pointed out by Lenny Ng and Josh Sabloff.

This paper has been withdrawn by the author due to incomplete interpretation for the results.

This paper has been withdrawn by the authors due to substantial changes.

This paper has been withdrawn by the author, due to a crucial error in the proof of Thm.1

This paper has been withdrawn by authors for significant modification.

This paper has been withdrawn

This paper has been withdrawn. A significantly revised version will be posted in the near future.

This paper has been withdrawn at the author's request.

This paper has been withdrawn by the authors

This paper has been withdrawn by the author, due to necessity of revision.

The paper has been withdrawn by authors.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to essential mistakes in some previous versions.

This paper has been withdrawn by the author due to a crucial error.

This paper has been withdrawn by the authors due to a likely hole in the proof.

%auto-ignore The paper has been withdrawn by authors. The completely revised version can be found under the following preprint-no: hep-ph/9910282.

This paper has been withdrawn by the authors due to the existence of main results in the literature.

This paper has been withdrawn by the authors

This paper has been withdrawn due to non-clearness of some technical points, as well as lack of a reasonable statement of quantization conjecture.