The paper's authors are surely writing for an audience of physicists and not a general audience. As mentioned here[1], their audience will expect this usage. Sc

The paper's authors are surely writing for an audience of physicists and not a general audience. As mentioned here[1], their audience will expect this usage. ScienceDaily may not have, though if they did, it would have been nice for them to highlight the distinction. [1] https://news.ycombinator.com/item?id=20666140 https://news.ycombinator.com/item?id=20666140