I don't know how they hope to get away with it, but I guess in string theory, anything and everything goes, especially with unrefereed "papers". These string theorists actually used a non-existent word "embiggens" from an episode of The Simpsons (BTW, the movie is hilarious!) in a "paper". I use the word "paper" in quotes because so far, as is a common practice in the field, they tend to simply upload the manuscript onto the e-print ArXiv site and then call it a day. So there's no refereeing, and no journal editors for quality control not only of the content, but also the presentation. That they could get away with silly things like this. From my perspective, it's another blemish in the way the field is being practiced. D'oh!! Zz.