Why does the author insist on using 'we' as if he were an author of the study? I found that very confusing... (I'd find it more acceptable if a physical exper

Why does the author insist on using 'we' as if he were an author of the study? I found that very confusing... (I'd find it more acceptable if a physical experiment were being discussed, but this seems to be a theoretical result.) Oh, here's the arxiv link: http://arxiv.org/abs/1101.0199 http://arxiv.org/abs/1101.0199