Related papers: Imitative Trust versus Indirect Reciprocity

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This paper has been withdrawn by the authors, due a oversimplified decoherence model. It will be substituted by a new work.

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This paper has been withdrawn by the authors.

This paper has been withdrawn by the author because there are some typos in proofs.

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This paper was withdrawn by the authors due to the belated discovery of a published paper showing similar results.

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This paper has been withdrawn by the authors.

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This paper has been withdrawn by the authors pending corrections.

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This paper has been withdrawn.

This paper has been withdrawn by the author due to the incorrect argument for the security.