Related papers: Intrinsic chaoticity in stable classical systems a…

This paper has been withdrawn by the authors due to need of essential revision.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author(s)

This paper has been retracted, for obvious reasons.

This paper has been withdrawn by the authors due to a gap in the proof of the main result (in 5.3).

This paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn by the author.

This paper is withdrawn.

This is a 1-page comment on a wrong paper that recently appeared in PRL (Phys. Rev. Lett. 86 (23), 5393 (2001), also quant-ph/0101004). The authors claim to have shown that using a quantum computer gives an "exponential advantage" for…

This paper has been withdrawn.

This paper has been withdrawn. See quant-ph/9806031 for a discussion.

This paper has been withdrawn.

This paper has been withdrawn by the author.

This paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn by the author

The article is taken out.

This paper has been withdrawn as it has been superseded by 0808.2697